53 GMCs had 'battery gauges'? .... yes GMC's were pos ground, up to 55 I believe, but that doesn't matter to an an ammeter, it'll read backwards if it's hooked up backwards

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