That 1116775 relay that JimGMC posted is listed for early GMC COE trucks (300 CF & EF; 350 CC, CF, EF & FF) as well as all later 6v models once they switched to relays like Bartamos said.
Bart: Why would the relay need a chassis ground? Seems to me that the only ground needed is provided by the horn button (Switch) when it is pushed.
Last edited by Bill Hanlon; 08/04/2025 2:43 AM.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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