Mine would be the backlight option with the 3 wires.
Thinking I would combine the purple and positive wire and crimp that to one upfitter, and then the green would go to another if I wanted the backlight to be switched?
1) When NOT using the provided harness :
>> You don't need the Purple together with the Red.
>>> Cut the provided harness at the best junction to have the three wires (Green, Red, Black). >>> Green wire could be spliced to an IGN ON source (As in the PTO bundle already there).
>>> Splice the Red to whatever OEM Up-fitter.
>>> Splice Black to Ground (grounding point).
2) Using the provided harness :
>> Set Red ring terminal to Battery +. Set Black ring terminal to Battery -.
>> Remove the provided switches from the harness (Purple wire // Green Wire)
>> Splice OEM up-fitter to Purple wire for main beam use as desired.
>> Splice OEM up-fitter to Green wire for back light use as desired (POSSIBLE to use IGN ON PTO wire as the feed here as well. Backlight would be ON any time you have Power On or Motor On.)
#2 solution maintains the "as provided" LED bar connections, limits cutting, keeps provided relay in place (no big deal as the OEM up-fitters already have a relay in use as well).
You MIGHT be able to source the LED bar 3-wire connector with pigtail at any auto store, so you just keep the provided harness in whole. Splice the pigtail as directed in #1.
If there's any questions just ask.