I dug through this forum and couldn't get a clear answer.
I'm hooking up lights to be triggered by the reverse lights and a switch I have installed already.
From what I understand so far (please correct if wrong)
If I was doing switch only:
pin 30 to battery
85 to ground
86 to dash switch
87 to lights
Can I add another trigger (the back up light source wire) to the 5 pin relay to enable lights to go on from either source? I don't think I can unless I change out the dash switch to a dpdt.