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VSS
Installation
Guide
Product # 8156VSS, 8156VF,
8160VSS, 8160VF

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Summary of Contents for DriveRight DriveRight 156VSS

  • Page 1 ® Installation Guide Product # 8156VSS, 8156VF, 8160VSS, 8160VF...
  • Page 2: Table Of Contents

    • Consult the dealer or an experienced radio/TV technician for help. Changes or modification not expressly approved in writing by Davis Instruments may void the warranty and void the user's authority to operate this equipment. © Davis Instruments Corp. 1997-2003. All rights reserved.
  • Page 3: Components

    This manual provides installation instructions for the DriveRight 600 VSS, (Vehicle Speed Sensor) and DriveRight 600 VF, (VSS for Ford F-250 & F-350 trucks, 2000 and later) and is also used with the VSS Installation Mounting Kits ( & Since the specific installation details vary from vehicle to vehicle, these instruc- tions are intended to be a general guide for professional installers or for knowl- edgeable and experienced mechanics.
  • Page 4 Digital Input Adapter Cable Harness Cable Black Ground Wire (1) Red +12V Wire with Blue Wire with Fuseholder (2) (22 AWG) (22AWG) Fuseholder (2) (22 AWG) Fuses (4) (3AG 1-1/4 x 1/4", Insulated Male Disconnects (4) Spade Terminal Sets .25A, Slo-Blo) (18-22AWG) #8-10 Studs (2) 1/4"...
  • Page 5: Planning Considerations

    If you are uneasy about installing DriveRight, please have a qualified professional do the installation. Davis specifically disclaims any liability for injury or loss resulting from the installation or use of DriveRight.
  • Page 6 The wiring diagram provides an overall picture of the DriveRight 600 VSS installation. Display Adapter Cable Blue Wires with Butt Digital In-Line Splices Inputs Fuses Green Yellow Ground Black Harness Cable White In-Line Butt Splices (3) Red Wire with Splice Fuseholder In-Line Unswitched...
  • Page 7 The web site “www.rostra.com’ is owned and operated by Rostra Precision Instruments. Rostra does not provide support for DriveRight products. If you have trouble finding the VSS wire, please contact Davis Instruments Technical Support at 510-732-7814. Some base model vehicles with manual transmission and no cruise control may not have the VSS module installed.
  • Page 8 Or, find a known circuit that does not involve safety related equipment (headlights, tail lights, air bag, etc.) that you can tap into with an in-line splice. Possible candidate wires include those from the cigarette lighter, dome light, glove compartment light, clock, tail gate light, or other convenience functions.
  • Page 9 Two digital inputs located on the adapter cable are available to monitor the on/off state of lights, including brake lights, or of other 12 VDC electrical accessories. Typically Digital Input 1 monitors the brake lights and Digital Input 2 monitors the headlights.
  • Page 10 The DriveRight console can be mounted in a number of places, including the top of the dash, on the face of the dash, or on a sun visor. Double-Sided Foam Tape Mounting Bracket Mounting Bracket Flat Head Self-Tapping Screw Pan Head Self-Tapping Screw Flat Space Split-Lock Washer for Velcro...
  • Page 11 Use the following steps to finish the installation. It is not necessary to enter a code in order to perform this test. Do not enter a code until you read the user’s manual. Insert the battery into the DriveRight console as shown. Connect the adapter cable to the console cable.
  • Page 12: Troubleshooting

    Because not all VSS signals are the same, you may need to change the default DIP switch setting on the VSS in- line circuit. VSS Dip Switch Switch 1 is used for square wave VSS signals which do not go to ground. Switch 2 AC couples the signal in and is used for sine wave VSS signals.
  • Page 13 Use this flow chart to determine the optimum VSS dip switch setting. 1 2 3 4 0 = OFF 0 1 0 1 1 = ON Drive 2 mph. Green LED flashing or dimmed? 1 2 3 4 1 1 0 1 Drive 2 mph.
  • Page 14 If your speed is not registering correctly, consult the following check list to help you identify the cause of the problem. Make sure the display is reading in the units (km/hr or mph) you expect. Hold down the Set/Clr button in the Current Screen to change the units.
  • Page 15: Specifications

    Visit our website for additional product information: www.davisnet.com. The DriveRight can work with many different VSS signals provided the switch settings of the VSS in-line circuit are set correctly. However, if the signal does not meet the specifications below it may not work. Maximum VSS frequency: .
  • Page 16: Technical Support

    This warranty does not cover damage due to improper installation or use, negligence, accident, or unauthorized service, or to incidental or consequential damages beyond the Davis products themselves. Implied warranties are limited in duration to the life of this limited warranty.

This manual is also suitable for:

8156vf8160vss8160vf8156vss