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Additional Notes
Wiring Information:
The required wiring connections to the vehicle harness are as follows:
Red: Connect to switched 12 volt source. (0V when key-off, 12V when key-on)
Black: Connect to a good ground point on the chassis or firewall.
Orange: Connect to cruise (-) terminal on D.D. systems or your choice of cruise indicators
Blue: Connect to hot side of brake light switch.
Purple: 4K VSS input from VSS output on GM ECUs or Dakota Digital control boxes.
Yellow: Clutch switch Batt input
White: Clutch switch GND input
White/Brown: Connect to cold side of brake light switch. This wire should have 12 volts only when the brake is
depressed. When the brake is not depressed it should be grounding through the brake light bulbs.
If the brake light bulbs are not connected or are burned out, the system will not operate. LED
brake lights will not provide proper grounding. If you have LED brake lights, use an
automotive relay with the white/brown wire between 12 volts and ground as shown below.
**Note** If you have LED taillights in your vehicle you will have to run a relay between the brake switch and the cruise
control box as shown below.
VSS from ECU:If you are inputting an open collector 4kPPM signal into the CRC-2000 you will need to use the
provided 2.7k ohm resistor located in the red bag. Connect the resistor between the purple VSS wire and a +5V or
+12V power source.
VSS from Dakota Digital control box: Connect purple VSS wire to the "SPD OUT". Then, connect the included
resistor between the "SPD OUT" and "SPD +" terminal on a VHX, HDX, RTX or VFD series control box. Follow your
Dakota Digital instrument system manual to configure the SPD OUT terminal to 4k PPM output.
VSS from GPS-50: connect the purple VSS wire directly to the SPEED 2 terminal of the GPS-50. Configure the GPS-
50 SPD setting to "4" (4000 PPM).
Control switch:There are various types of turn signal and dash mount control switches available. The type of control
switch that we supply with the cruise control is a closed circuit type for a turn signal handle control and open circuit for
dash mount switches. If you will be connecting to a factory GM four wire control switch, they are open circuit type. GM
switches which do not have four wires are not compatible with this cruise control. Ford cruise control switches are
neither closed circuit nor open circuit and are not compatible with this cruise control.
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Manual #650553
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