I split the faring on my 86 liberty edition electric glide to do some electrical repairs and I would like to repair the fuel sending unit as the gauge always reads empty. Does the fuel sender work like a car 0-90 ohms resistance to ground? I haven't checked yet to see if 12v is present at sender as batt is disconnected. I can diagnose if I know how the system works. Any help is greatly appreciated!

 

I did take a test light to ground and gauge went to 3/4 full which is what is in tank!

 

Sounds like you have a faulty ground. Check the ground at the triple tree.

 

Sounds like the tank is not grounded...simple fix

 

I'll do a little more investigating and use tips and let ya know what I find! Thanks for the replies! Greatly appreciated!

 

Sounds as if the gauge works OK, just a matter of rectifying that ground. That could be as simple as a rusty, dirty or loose contact, or a broken wire. See? Some electrical stuff is often mechanical!

 

Okay I pretty sure it's in the sending unit! With wire disconnected it reads empty and then I touch wire to tank filler cap right beside it and goes to full. That Tells me gauge is ok, has a good ground etc.