You need very good metal to metal contact for your main ground. If you don't have this, you will have never ending troubles. You could use a bolt that taps it's own threads as it is installed. This will bite into the metal and give you a ground.


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!