| It sounds like a previous owner may have installed a set of jumper wires to get around a power-to-the-fuel-pumps problem. He/she probably connected those loose wires directly to the battery terminals to start the engine when the pumps wouldn't run. Weird. Maybe he/she looked at the price of a fuel pump relay...
As for opening up relay, don't. You would be amazed at all the crap in there. It is *far* from a normal relay with only a coil and contacts. That box is packed with resistors, capacitors, little circuit boards, and even some integrated circuits. That's becasue the "fuel pump relay" does a lot, lot more than power the fuel pumps.
If you can figure out what's going on in there you're on your way to a career in electrical engineering. |