Door panel's been off 2 days and my significant other is perturbed.. evidently. So upon reading other posts I tried test powering it from a random 12v gel cell. I have no 'bed of nails' alligator clips, so with regular clips and pins I pierced the black and purple/black wires and got my finger burnt quickly. Is there anywhere I can find the pinout for these four wires and what polarity? Also, I'm thinking I can't test this in-circuit.. Is this a correct assumption?