1975 Ford F150 Wiring Diagram Circuit Number Chart
I hear you about parts guys not knowing much about the older vehicles. They just don't seem to keep that information in the computers. That new relay certainly looks correct & the parts number matches so it should work fine. At least now we know we have good contacts in it so one less thing to worry about. Now I have to get even more specific. You wrote: "Cleaned up a small spot on the frame that the tank actually attaches to, used an alligator clip as a ground and tested the leads on the wire harness at the tank side." The "wire harness" part of that is a little confusing. Do you mean the connector at the tank that has two wires? It looks like it from the picture. IF the wire you are checking is the one going to the Gas Gauge (Yellow with Red Stripe) and you are getting a reading of 1.27 volts pulsing, that is not unusual and does not indicate a problem with that cir
