Directions for wiring in a Relay to accommodate a cruise control

Rostra

Installed LED tail lights and cruise is not working

Answer: When using LED tail lights, the violet wire at cold side of brake will not

read ground through the brake system. A five function relay will be required to let

the violet wire read ground and then lose ground when the brake is applied. Connect

the relay using the selected terminals below:

85 to cold side of brake (+12 when brake is pressed)

86 to ground

87 not used

87A to violet wire from cruise harness

30 to ground

 

 

Audiovox

Installed LED tail lights and cruise is not working

Answer: When using LED tail lights, the purple wire at cold side of brake will not

read ground through the brake system. A five function relay will be required to let

the purple wire read ground and then lose ground when the brake is applied. Connect

the relay using the selected terminals below:

85 to cold side of brake (+12 when brake is pressed)

86 to ground

87 not used

87A to Purple wire from cruise harness

30 to ground