According to the diagram I have for that year of GMC there are two 20 amp fuses in a fuse box. Those fuses protect the tail lights and the stop light. There should not be a connection to the ignition from there.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!