Posted by Josh on Monday, February 10, 2003 at 3:45PM :
In Reply to: link to diagram posted by casebro on Monday, February 10, 2003 at 3:35PM :
It's got 12volts at post 1. All wiring has been cleaned, inspected, and ohms resistance tested. It took two days to test the harness. Nothing looks to be breaking down there.
Do you know if the negative leads on the coil supply 12volts or are they a cut off? I've found an inconsistency with them but I cannot figure out if they are supposed to be grounds or 12volts. If I can figure that out, then I can test the P/U. But both red leads going in have 12volts, so I'm assuming both leads coming out must be consistent either grounds or 12volts?? But which is the question.
Can someone out there test their truck. Connect the negative lead on the meter to batt, and then connect the positive meter lead to negative post on coil, tell me with key on... Whether 12volts is flowing out of the coil or not. Also if possible can you tell me with key on what each wire has on it relative to volts. If you're wiring is factory original the #2 ECU wire should be black w/greenish yellow traces.