Connect it at the gauge so it goes to full deflection.
Lift the green/red wire at the sender and then ground it to the engine. the gauge should go all the way through it’s range when you lift off of the ground and then ground it.
That proves the gauge is good.
The “signal” is just the gauge reacting to the amount of resistance to ground at the sender.
76 wiring diagrams.
https://www.dropbox.com/sh/r34ab8n9hx7xl02/AAArayQGr-klXXq_HeUG65cKa?dl=0
__________________
Dennis
Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C
Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds.
Last edited by timmy2; 02-17-2021 at 12:16 PM..
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