Install Instructions for the Roadmaster Single Park Light Diode

Question:

Hooking my dump trailer up to my tractor with a 7 way plug… assuming I need a diode to prevent the trailer power from back flowing to the tractor. Do I need one for each wire, just the hot, or hot and ground?

asked by: Brian

Helpful Expert Reply:

To install the Roadmaster Single Park Light Diode # RM-690 you are just going to need to find and cut the wire going to the parking light bulb, and install the diode in-line with the wiring. The "IN" side will be the part of the wire that leads to the front of the vehicle, and the "OUT" side goes to the bulb.

expert reply by: Bryce D