Beltfed, Yes my truck will be 12v negative ground.

Here's a pic of the GMC (on the right) and my stock '50 chevy on the left

Back of gauge clusters- GMC vs Chevy

Last edited by Norcal Dave; 07/09/2017 3:58 PM.

~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission