I have a 1960 GMC 4X4. I also have a 1960 and a 1963 manual. The 63 manual indicates a 7 pin crescent. I could not find a 62 schematic anywhere. My 1960 GMC manual shows a 6 pin Turn sig connector. looks like the horn wire may be the 7th wire, not run thru the 1960-62 turn sig.

Last edited by bartamos; 06/10/2015 3:17 AM.
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