50GMC,
that is correct if it is equipped with a mechanical vibrator. If it has the new electronic vibrator replacement, the electronic unit will be made for either positive ground or negative ground, but not both.


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!