if the power lead is attached to the correct terminal [one toward driver side], grounding the other terminal [pass side] or the wire at the sender should make the gauge move .... the sender is a variable resistance that changes as it gets hotter - make sure you do NOT use any thread sealer or teflon on the sender, it needs to have a good ground to the engine .... and welcome to the garage wink

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics