a bouncing gauge is not normal, might be a poor connection that's reacting to vibration - did you put a ground wire from a sender screw to the cab or frame? sure all connections tight and clean of any paint?

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