heress some thing new, came back from vacation, had left the key on and the battery was dead, who ever had the truck before me installed new cables on the battery RED on the neg side going to the frame, and BLACK on the POS side going to the started, so I, me) (my self),,all my fault, hooked the battery charger up backwards, POS lead to the red cable, Neg post.... and now my AMP gauge runs backwards but the truck drives fine and the battery stays charged while driving...........maybe I should drain the battery again and charge it the corect way
