My 51 came with a horn relay. One terminal is the main power and it connects to the battery lead at the starter. Another terminal is the ground end of the coil and it goes to your horn button. The third wire supplies power to the horn.


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!