David I cannot get my (own) attachment to open either . I saved it as it had 2 excellent pics from "Healthservices" on here of the 5 pin ECU/dual ballast and the 4 pin/single ballast setups. I will send it from my computer to your email address & see if it goes thru. EDIT I just sent it & checked and it said "attachment stripped". I think it was too big to go thru (it was 4 pages) and I couldn't figure out how just to send the 1 page w the pics. but yes that wire should not be hot as it grounds the coil pri neg terminal to ground inside the ECU when the ECU is triggered by the dist pickup. Access those diagrams and find what wires need to be changed.