Thanks for the troubleshooting list. @redfish, no , my original PCB did not blister, it was just old and the little stems had come loose.
@67Dart, I plan on using your list to troubleshoot. I want to test the cluster out of the car like you mention. But how do I rig up a 12v system without buying another car battery? Is there a AC to 12v convertor that I could plug into the wall? That is cheap?
Also i do have some Wall Wart plugs that says it is 12v, but at very low amps like 1 or 2.
I would assume that I would need more amps than that? (that should work fine for testing)
I use a 12v 1 amp transformer from an old router I junked for that kind of stuff.
Any help please. I have done a ton of wiring (AC), but 12v system is completely new to me.
also when you say Switched 12v, does this means it supplies 12v only when the key is in ignition?Yes, key in and turned to the run position.