The first thing you will need to do is to add the pigtails to the lights. As I mentioned above, the lights themselves have two wires and the harness has three wires.
The harness uses a red wire (hot low-beam), yellow wire (hot high-beam) and a black wire (ground). The Rob 2 Pro lights only have the red and black wires.
To use the harness you have two options.
- Leave the yellow wire unconnected (as in the image above).
-
Wire the red and yellow wires together (what I suggest).
Leaving the yellow wire unconnected will cause the switch to operate on every other click. Wiring the red and yellow wires together will allow the switch to work each time it is pressed, tuning the lights on and off. You can see how this works in the video accompanying this blog.