I'm so confused....Temp sending unit question??

[EarlsflyinCobra]

I am in the process of installing and wiring the temp sending units. I have Autometer gauges and senders. I was reading the instructions (I know, WHY...LOL) and one place says to use teflon tape on the threads and in another place it says not to use tape on the threads for a good ground?? NOW, which is it, to tape or not to tape??

[FWB]

i used tape on mine.....

[jwd]

It's okay to use tape with mechanical gauges, but electric ones need the sending unit to have a good ground. Use a little bit of teflon paste instead of tape.

Jim

[EarlsflyinCobra]

Oh, ok, I've been using mostly paste anyway, so I guess I'm good...who knew, I did something right by mistake

[FWB]

i do my best work by mistake.....its when i start to think is when i get in trouble.

[bobcowan]

All of my instruction specifically state to use a thread sealant. I use teflon paste.

[jon@harrison.ne]

I never rely on threads for an electrical connection. It will probably work for a while but one day it won't.I solder or screw a terminal to the sending fitting and ground the other end. Carefully drill a tap hole for a 2-56 screw in the sending unit going just deep enough for about 3 threads so you don't break into the inside of the unit and then tap with a bottoming tap (no end taper). I would first try to solder on a wire. TIX solder has a very low melting point-wash off the flux when done.

[jon@harrison.ne]

If you are nervous about doing this I might add the wire for a reasonable fee. Mine has worked for 10 years.