Wiring for fuel sender to gauge

[scrub]

My fuel gauge has never worked in my 76. There are 2 posts coming off the top of the sender and 2 posts on the back go the gauge. Does anyone know how they are supposed to be wired? I have a new fuel sender on the bench and want to test with it prior to trying to figure out the issue in the harness, or possibly just run new wires. Thx

 

[Bully Bob]

Hi scrub,

It's pretty straight forward. (but, I assume you have dual tanks.?)

As you see, the sender is an adjustable resistor (as the float moves up-n-down). That post runs forward to the gauge.

--The other post runs to ground.--

The wire fr. the tank(s) run (to the switch if dual thanks) to the gauge post.

12V runs to the gauge cluster & is DROPPED to 5-6V by a mini volvage regulator attached to the back of the gauge cluster. Do not try to operate W/O this regulator.

The regulator also feeds the temp & oil pres. gauge.