...if you short the fuel sending unit wires together the gauge should shoot over to fuel. I'm about to try it and didn't want to burn up my new unit that's not working. I'm pretty sure it's those nail head connections on the wires, I had a heck of a time getting those boots off and think I geeked them up.

Is this true?

Edited June 25, 201410 yr by siteunseen

You bet. The resistor wire in the sender is 10 to 90 ohm, Full to Empty. So 0 ohms (wires connected directly together) is just "really full" (or 'Fuel' as you put it ) . No harm.

I've been soldering real wires to those nail heads and not putting up with that silly nail head connector thingy for years.

One note, once soldered, remember to support the wires really well so that the solder connection is not allowed to flex or experience vibration from wires moving. It will fail shortly if you don't. Solder is good for electrical properties, not its structural strength or vibration resistance.

Edited June 25, 201410 yr by zKars

THANK YOU! I'm off to test now.

Ahh, I see my mistake now. Yes I meant FULL. I missed it by an E.