that ground cable may have a poor connection or be too light a gauge .... "when I have a little trouble starting the truck" prolly means you've fried your starter, which in turn shorted the battery .... the 6V starter works fine on 12V as long as you don't grind away with a poor starting engine, should start quick and easy

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