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MeterMatch-VR
Overview
MeterMatch™ by TechnoVersions LLC is for making analog
gauges more accurate, or to allow you to mix and match
different gauges and senders. It can be used with many
gauges that have resistive senders - such as common fuel, oil-
pressure and temperature gauges.
The MeterMatch-VR, a special model, is designed to control
gauges in 60's-early 70's era Ford and Chrysler products which have gauges that are powered by a
5V instrument voltage regulator behind the instrument panel. MeterMatch-VR provides the circuitry to
improve the accuracy of the gauge, and also to power the gauge since the factory regulator isn't
compatible with modern electronics.
Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site
where you will find this manual as a PDF, which you can view or print in larger size.
Wiring Quick-Start

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Summary of Contents for TechnoVersions MeterMatch-VR

  • Page 1 Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site where you will find this manual as a PDF, which you can view or print in larger size.
  • Page 2: Theory Of Operation

    - it can correct for that. To calibrate MeterMatch-VR, you first set the sender to a known value. For example, fill your fuel tank. Set the MeterMatch to program mode, then with Up and Dn buttons, make your gauge read what you want for that sender value.
  • Page 3: Installation

    Installation MeterMatch-VR is contained in a plastic enclosure that is 1.85" by 2.40" x 0.93". To calibrate it, you will need to expose the circuit by removing the small Phillips-head screw in the bottom center of the enclosure, using a #1 or smaller Phillips screwdriver. Take care that the circuit board doesn't touch any metal which could short things out, and when finally installed, make sure it is in a dry spot that doesn't get overly hot.
  • Page 4 (power and signal) as originally wired. - Don't attempt to power more than one gauge from the orange wire from the MeterMatch-VR, it is designed to only provide enough current for one gauge, and could otherwise overheat.
  • Page 5 Calibration Once wired, it is necessary to calibrate your MeterMatch. The rotary switch Ѳ positions are used as follows: Normal Operation after calibration High calibration point Mid-high calibration point Mid-low calibration point Low calibration point In addition to the terminal strip and rotary switch, you will find three push-buttons: Moves the meter needle one direction Moves the meter needle the other direction Stores the calibration point presently selected...
  • Page 6 Finally, set the MeterMatch rotary switch Ѳ back to "0" (Normal Operation), put the cover back on, and enjoy using your calibrated gauge. You can go back and reset any point using the same process, it will simply over-write the data for that point stored previously.
  • Page 7 Return Policy If a MeterMatch unit does not work properly in your application, and is not damaged, TechnoVersions will allow return for full refund of purchase cost, exclusive of shipping charges. Claim for such must occur within 30 days of product shipment from TechnoVersions.
  • Page 8 MeterMatch Specifications (subject to change) Size 1.85"x2.4"x0.93" Weight 1.5 Oz Connections #18 AWG wires, approximately 18" long Sender Input Ohmmeter reading of sender input to ground Max current/voltage through sender 20mA/5Vdc Resolution ranges from approximately 5% at 5  to 0.1% at 3 K...
  • Page 9 Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site where you will find this manual as a PDF, which you can view or print in larger size.
  • Page 10 - it can correct for that. To calibrate MeterMatch-VR, you first set the sender to a known value. For example, fill your fuel tank. Set the MeterMatch to program mode, then with Up and Dn buttons, make your gauge read what you want for that sender value.
  • Page 11 Installation MeterMatch-VR is contained in a plastic enclosure that is 1.85" by 2.40" x 0.93". To calibrate it, you will need to expose the circuit by removing the small Phillips-head screw in the bottom center of the enclosure, using a #1 or smaller Phillips screwdriver. Take care that the circuit board doesn't touch any metal which could short things out, and when finally installed, make sure it is in a dry spot that doesn't get overly hot.
  • Page 12 (power and signal) as originally wired. - Don't attempt to power more than one gauge from the orange wire from the MeterMatch-VR, it is designed to only provide enough current for one gauge, and could otherwise overheat.
  • Page 13 Calibration Once wired, it is necessary to calibrate your MeterMatch. The rotary switch Ѳ positions are used as follows: Normal Operation after calibration High calibration point Mid-high calibration point Mid-low calibration point Low calibration point In addition to the terminal strip and rotary switch, you will find three push-buttons: Moves the meter needle one direction Moves the meter needle the other direction Stores the calibration point presently selected...
  • Page 14 Finally, set the MeterMatch rotary switch Ѳ back to "0" (Normal Operation), put the cover back on, and enjoy using your calibrated gauge. You can go back and reset any point using the same process, it will simply over-write the data for that point stored previously.
  • Page 15 Return Policy If a MeterMatch unit does not work properly in your application, and is not damaged, TechnoVersions will allow return for full refund of purchase cost, exclusive of shipping charges. Claim for such must occur within 30 days of product shipment from TechnoVersions.
  • Page 16 MeterMatch Specifications (subject to change) Size 1.85"x2.4"x0.93" Weight 1.5 Oz Connections #18 AWG wires, approximately 18" long Sender Input Ohmmeter reading of sender input to ground Max current/voltage through sender 20mA/5Vdc Resolution ranges from approximately 5% at 5  to 0.1% at 3 K...
  • Page 17 Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site where you will find this manual as a PDF, which you can view or print in larger size.
  • Page 18 - it can correct for that. To calibrate MeterMatch-VR, you first set the sender to a known value. For example, fill your fuel tank. Set the MeterMatch to program mode, then with Up and Dn buttons, make your gauge read what you want for that sender value.
  • Page 19 Installation MeterMatch-VR is contained in a plastic enclosure that is 1.85" by 2.40" x 0.93". To calibrate it, you will need to expose the circuit by removing the small Phillips-head screw in the bottom center of the enclosure, using a #1 or smaller Phillips screwdriver. Take care that the circuit board doesn't touch any metal which could short things out, and when finally installed, make sure it is in a dry spot that doesn't get overly hot.
  • Page 20 (power and signal) as originally wired. - Don't attempt to power more than one gauge from the orange wire from the MeterMatch-VR, it is designed to only provide enough current for one gauge, and could otherwise overheat.
  • Page 21 Calibration Once wired, it is necessary to calibrate your MeterMatch. The rotary switch Ѳ positions are used as follows: Normal Operation after calibration High calibration point Mid-high calibration point Mid-low calibration point Low calibration point In addition to the terminal strip and rotary switch, you will find three push-buttons: Moves the meter needle one direction Moves the meter needle the other direction Stores the calibration point presently selected...
  • Page 22 Finally, set the MeterMatch rotary switch Ѳ back to "0" (Normal Operation), put the cover back on, and enjoy using your calibrated gauge. You can go back and reset any point using the same process, it will simply over-write the data for that point stored previously.
  • Page 23 Return Policy If a MeterMatch unit does not work properly in your application, and is not damaged, TechnoVersions will allow return for full refund of purchase cost, exclusive of shipping charges. Claim for such must occur within 30 days of product shipment from TechnoVersions.
  • Page 24 MeterMatch Specifications (subject to change) Size 1.85"x2.4"x0.93" Weight 1.5 Oz Connections #18 AWG wires, approximately 18" long Sender Input Ohmmeter reading of sender input to ground Max current/voltage through sender 20mA/5Vdc Resolution ranges from approximately 5% at 5  to 0.1% at 3 K...
  • Page 25 Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site where you will find this manual as a PDF, which you can view or print in larger size.
  • Page 26 - it can correct for that. To calibrate MeterMatch-VR, you first set the sender to a known value. For example, fill your fuel tank. Set the MeterMatch to program mode, then with Up and Dn buttons, make your gauge read what you want for that sender value.
  • Page 27 Installation MeterMatch-VR is contained in a plastic enclosure that is 1.85" by 2.40" x 0.93". To calibrate it, you will need to expose the circuit by removing the small Phillips-head screw in the bottom center of the enclosure, using a #1 or smaller Phillips screwdriver. Take care that the circuit board doesn't touch any metal which could short things out, and when finally installed, make sure it is in a dry spot that doesn't get overly hot.
  • Page 28 (power and signal) as originally wired. - Don't attempt to power more than one gauge from the orange wire from the MeterMatch-VR, it is designed to only provide enough current for one gauge, and could otherwise overheat.
  • Page 29 Calibration Once wired, it is necessary to calibrate your MeterMatch. The rotary switch Ѳ positions are used as follows: Normal Operation after calibration High calibration point Mid-high calibration point Mid-low calibration point Low calibration point In addition to the terminal strip and rotary switch, you will find three push-buttons: Moves the meter needle one direction Moves the meter needle the other direction Stores the calibration point presently selected...
  • Page 30 Finally, set the MeterMatch rotary switch Ѳ back to "0" (Normal Operation), put the cover back on, and enjoy using your calibrated gauge. You can go back and reset any point using the same process, it will simply over-write the data for that point stored previously.
  • Page 31 Return Policy If a MeterMatch unit does not work properly in your application, and is not damaged, TechnoVersions will allow return for full refund of purchase cost, exclusive of shipping charges. Claim for such must occur within 30 days of product shipment from TechnoVersions.
  • Page 32 MeterMatch Specifications (subject to change) Size 1.85"x2.4"x0.93" Weight 1.5 Oz Connections #18 AWG wires, approximately 18" long Sender Input Ohmmeter reading of sender input to ground Max current/voltage through sender 20mA/5Vdc Resolution ranges from approximately 5% at 5  to 0.1% at 3 K...
  • Page 33 Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site where you will find this manual as a PDF, which you can view or print in larger size.
  • Page 34 - it can correct for that. To calibrate MeterMatch-VR, you first set the sender to a known value. For example, fill your fuel tank. Set the MeterMatch to program mode, then with Up and Dn buttons, make your gauge read what you want for that sender value.
  • Page 35 Installation MeterMatch-VR is contained in a plastic enclosure that is 1.85" by 2.40" x 0.93". To calibrate it, you will need to expose the circuit by removing the small Phillips-head screw in the bottom center of the enclosure, using a #1 or smaller Phillips screwdriver. Take care that the circuit board doesn't touch any metal which could short things out, and when finally installed, make sure it is in a dry spot that doesn't get overly hot.
  • Page 36 (power and signal) as originally wired. - Don't attempt to power more than one gauge from the orange wire from the MeterMatch-VR, it is designed to only provide enough current for one gauge, and could otherwise overheat.
  • Page 37 Calibration Once wired, it is necessary to calibrate your MeterMatch. The rotary switch Ѳ positions are used as follows: Normal Operation after calibration High calibration point Mid-high calibration point Mid-low calibration point Low calibration point In addition to the terminal strip and rotary switch, you will find three push-buttons: Moves the meter needle one direction Moves the meter needle the other direction Stores the calibration point presently selected...
  • Page 38 Finally, set the MeterMatch rotary switch Ѳ back to "0" (Normal Operation), put the cover back on, and enjoy using your calibrated gauge. You can go back and reset any point using the same process, it will simply over-write the data for that point stored previously.
  • Page 39 Return Policy If a MeterMatch unit does not work properly in your application, and is not damaged, TechnoVersions will allow return for full refund of purchase cost, exclusive of shipping charges. Claim for such must occur within 30 days of product shipment from TechnoVersions.
  • Page 40 MeterMatch Specifications (subject to change) Size 1.85"x2.4"x0.93" Weight 1.5 Oz Connections #18 AWG wires, approximately 18" long Sender Input Ohmmeter reading of sender input to ground Max current/voltage through sender 20mA/5Vdc Resolution ranges from approximately 5% at 5  to 0.1% at 3 K...
  • Page 41 Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site where you will find this manual as a PDF, which you can view or print in larger size.
  • Page 42 - it can correct for that. To calibrate MeterMatch-VR, you first set the sender to a known value. For example, fill your fuel tank. Set the MeterMatch to program mode, then with Up and Dn buttons, make your gauge read what you want for that sender value.
  • Page 43 Installation MeterMatch-VR is contained in a plastic enclosure that is 1.85" by 2.40" x 0.93". To calibrate it, you will need to expose the circuit by removing the small Phillips-head screw in the bottom center of the enclosure, using a #1 or smaller Phillips screwdriver. Take care that the circuit board doesn't touch any metal which could short things out, and when finally installed, make sure it is in a dry spot that doesn't get overly hot.
  • Page 44 (power and signal) as originally wired. - Don't attempt to power more than one gauge from the orange wire from the MeterMatch-VR, it is designed to only provide enough current for one gauge, and could otherwise overheat.
  • Page 45 Calibration Once wired, it is necessary to calibrate your MeterMatch. The rotary switch Ѳ positions are used as follows: Normal Operation after calibration High calibration point Mid-high calibration point Mid-low calibration point Low calibration point In addition to the terminal strip and rotary switch, you will find three push-buttons: Moves the meter needle one direction Moves the meter needle the other direction Stores the calibration point presently selected...
  • Page 46 Finally, set the MeterMatch rotary switch Ѳ back to "0" (Normal Operation), put the cover back on, and enjoy using your calibrated gauge. You can go back and reset any point using the same process, it will simply over-write the data for that point stored previously.
  • Page 47 Return Policy If a MeterMatch unit does not work properly in your application, and is not damaged, TechnoVersions will allow return for full refund of purchase cost, exclusive of shipping charges. Claim for such must occur within 30 days of product shipment from TechnoVersions.
  • Page 48 MeterMatch Specifications (subject to change) Size 1.85"x2.4"x0.93" Weight 1.5 Oz Connections #18 AWG wires, approximately 18" long Sender Input Ohmmeter reading of sender input to ground Max current/voltage through sender 20mA/5Vdc Resolution ranges from approximately 5% at 5  to 0.1% at 3 K...
  • Page 49 Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site where you will find this manual as a PDF, which you can view or print in larger size.
  • Page 50 - it can correct for that. To calibrate MeterMatch-VR, you first set the sender to a known value. For example, fill your fuel tank. Set the MeterMatch to program mode, then with Up and Dn buttons, make your gauge read what you want for that sender value.
  • Page 51 Installation MeterMatch-VR is contained in a plastic enclosure that is 1.85" by 2.40" x 0.93". To calibrate it, you will need to expose the circuit by removing the small Phillips-head screw in the bottom center of the enclosure, using a #1 or smaller Phillips screwdriver. Take care that the circuit board doesn't touch any metal which could short things out, and when finally installed, make sure it is in a dry spot that doesn't get overly hot.
  • Page 52 (power and signal) as originally wired. - Don't attempt to power more than one gauge from the orange wire from the MeterMatch-VR, it is designed to only provide enough current for one gauge, and could otherwise overheat.
  • Page 53 Calibration Once wired, it is necessary to calibrate your MeterMatch. The rotary switch Ѳ positions are used as follows: Normal Operation after calibration High calibration point Mid-high calibration point Mid-low calibration point Low calibration point In addition to the terminal strip and rotary switch, you will find three push-buttons: Moves the meter needle one direction Moves the meter needle the other direction Stores the calibration point presently selected...
  • Page 54 Finally, set the MeterMatch rotary switch Ѳ back to "0" (Normal Operation), put the cover back on, and enjoy using your calibrated gauge. You can go back and reset any point using the same process, it will simply over-write the data for that point stored previously.
  • Page 55 Return Policy If a MeterMatch unit does not work properly in your application, and is not damaged, TechnoVersions will allow return for full refund of purchase cost, exclusive of shipping charges. Claim for such must occur within 30 days of product shipment from TechnoVersions.
  • Page 56 MeterMatch Specifications (subject to change) Size 1.85"x2.4"x0.93" Weight 1.5 Oz Connections #18 AWG wires, approximately 18" long Sender Input Ohmmeter reading of sender input to ground Max current/voltage through sender 20mA/5Vdc Resolution ranges from approximately 5% at 5  to 0.1% at 3 K...
  • Page 57 Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site where you will find this manual as a PDF, which you can view or print in larger size.
  • Page 58 - it can correct for that. To calibrate MeterMatch-VR, you first set the sender to a known value. For example, fill your fuel tank. Set the MeterMatch to program mode, then with Up and Dn buttons, make your gauge read what you want for that sender value.
  • Page 59 Installation MeterMatch-VR is contained in a plastic enclosure that is 1.85" by 2.40" x 0.93". To calibrate it, you will need to expose the circuit by removing the small Phillips-head screw in the bottom center of the enclosure, using a #1 or smaller Phillips screwdriver. Take care that the circuit board doesn't touch any metal which could short things out, and when finally installed, make sure it is in a dry spot that doesn't get overly hot.
  • Page 60 (power and signal) as originally wired. - Don't attempt to power more than one gauge from the orange wire from the MeterMatch-VR, it is designed to only provide enough current for one gauge, and could otherwise overheat.
  • Page 61 Calibration Once wired, it is necessary to calibrate your MeterMatch. The rotary switch Ѳ positions are used as follows: Normal Operation after calibration High calibration point Mid-high calibration point Mid-low calibration point Low calibration point In addition to the terminal strip and rotary switch, you will find three push-buttons: Moves the meter needle one direction Moves the meter needle the other direction Stores the calibration point presently selected...
  • Page 62 Finally, set the MeterMatch rotary switch Ѳ back to "0" (Normal Operation), put the cover back on, and enjoy using your calibrated gauge. You can go back and reset any point using the same process, it will simply over-write the data for that point stored previously.
  • Page 63 Return Policy If a MeterMatch unit does not work properly in your application, and is not damaged, TechnoVersions will allow return for full refund of purchase cost, exclusive of shipping charges. Claim for such must occur within 30 days of product shipment from TechnoVersions.
  • Page 64 MeterMatch Specifications (subject to change) Size 1.85"x2.4"x0.93" Weight 1.5 Oz Connections #18 AWG wires, approximately 18" long Sender Input Ohmmeter reading of sender input to ground Max current/voltage through sender 20mA/5Vdc Resolution ranges from approximately 5% at 5  to 0.1% at 3 K...
  • Page 65 Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site where you will find this manual as a PDF, which you can view or print in larger size.
  • Page 66 - it can correct for that. To calibrate MeterMatch-VR, you first set the sender to a known value. For example, fill your fuel tank. Set the MeterMatch to program mode, then with Up and Dn buttons, make your gauge read what you want for that sender value.
  • Page 67 Installation MeterMatch-VR is contained in a plastic enclosure that is 1.85" by 2.40" x 0.93". To calibrate it, you will need to expose the circuit by removing the small Phillips-head screw in the bottom center of the enclosure, using a #1 or smaller Phillips screwdriver. Take care that the circuit board doesn't touch any metal which could short things out, and when finally installed, make sure it is in a dry spot that doesn't get overly hot.
  • Page 68 (power and signal) as originally wired. - Don't attempt to power more than one gauge from the orange wire from the MeterMatch-VR, it is designed to only provide enough current for one gauge, and could otherwise overheat.
  • Page 69 Calibration Once wired, it is necessary to calibrate your MeterMatch. The rotary switch Ѳ positions are used as follows: Normal Operation after calibration High calibration point Mid-high calibration point Mid-low calibration point Low calibration point In addition to the terminal strip and rotary switch, you will find three push-buttons: Moves the meter needle one direction Moves the meter needle the other direction Stores the calibration point presently selected...
  • Page 70 Finally, set the MeterMatch rotary switch Ѳ back to "0" (Normal Operation), put the cover back on, and enjoy using your calibrated gauge. You can go back and reset any point using the same process, it will simply over-write the data for that point stored previously.
  • Page 71 Return Policy If a MeterMatch unit does not work properly in your application, and is not damaged, TechnoVersions will allow return for full refund of purchase cost, exclusive of shipping charges. Claim for such must occur within 30 days of product shipment from TechnoVersions.
  • Page 72 MeterMatch Specifications (subject to change) Size 1.85"x2.4"x0.93" Weight 1.5 Oz Connections #18 AWG wires, approximately 18" long Sender Input Ohmmeter reading of sender input to ground Max current/voltage through sender 20mA/5Vdc Resolution ranges from approximately 5% at 5  to 0.1% at 3 K...
  • Page 73 Note: If you are finding this small manual difficult to read, go to the TechnoVersions.com web site where you will find this manual as a PDF, which you can view or print in larger size.
  • Page 74 - it can correct for that. To calibrate MeterMatch-VR, you first set the sender to a known value. For example, fill your fuel tank. Set the MeterMatch to program mode, then with Up and Dn buttons, make your gauge read what you want for that sender value.
  • Page 75 Installation MeterMatch-VR is contained in a plastic enclosure that is 1.85" by 2.40" x 0.93". To calibrate it, you will need to expose the circuit by removing the small Phillips-head screw in the bottom center of the enclosure, using a #1 or smaller Phillips screwdriver. Take care that the circuit board doesn't touch any metal which could short things out, and when finally installed, make sure it is in a dry spot that doesn't get overly hot.
  • Page 76 (power and signal) as originally wired. - Don't attempt to power more than one gauge from the orange wire from the MeterMatch-VR, it is designed to only provide enough current for one gauge, and could otherwise overheat.
  • Page 77 Calibration Once wired, it is necessary to calibrate your MeterMatch. The rotary switch Ѳ positions are used as follows: Normal Operation after calibration High calibration point Mid-high calibration point Mid-low calibration point Low calibration point In addition to the terminal strip and rotary switch, you will find three push-buttons: Moves the meter needle one direction Moves the meter needle the other direction Stores the calibration point presently selected...
  • Page 78 Finally, set the MeterMatch rotary switch Ѳ back to "0" (Normal Operation), put the cover back on, and enjoy using your calibrated gauge. You can go back and reset any point using the same process, it will simply over-write the data for that point stored previously.
  • Page 79 Return Policy If a MeterMatch unit does not work properly in your application, and is not damaged, TechnoVersions will allow return for full refund of purchase cost, exclusive of shipping charges. Claim for such must occur within 30 days of product shipment from TechnoVersions.
  • Page 80 MeterMatch Specifications (subject to change) Size 1.85"x2.4"x0.93" Weight 1.5 Oz Connections #18 AWG wires, approximately 18" long Sender Input Ohmmeter reading of sender input to ground Max current/voltage through sender 20mA/5Vdc Resolution ranges from approximately 5% at 5  to 0.1% at 3 K...