Alright, so I am trying to hook the wires up on my clinometer, and I want to hook the power wire up to something that controls the dash lights. Someone recommended the wire in the radio harness that controls the dimmer. Only problem is, I can't figure out which wire does that. I have a test probe, which is just lighting up. I have isolated which side of the harness controls the power, but no clue which one is the light-controlling wire. Can anyone offer a little assistance? That would be great. Thanks!