1955.2 GMC 1/2 ton trucks had 6 volt systems IF they had 6 cylinder engines. All 55.2 V8 equipped trucks were 12v.
When did 1/2 ton Chevy trucks convert to 12v?
Truckolet: Could you post a detailed picture of the wiring diagram?
'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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