the ground doesn't need to be used on a metal dash - the hot wire should be fused, either at the fuse block [if you have an original there's a position for it] or with an inline fuse

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