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Joined: Jan 2022
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B
'Bolter
'Bolter
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Trying to help an Internet friend with a '49 GMC work an electrical problem. I have a '49 Chevy wiring diagram and assume the GMC would be similar, but I'd rather be working from the real thing. Also, can anyone with a '49 GMC confirm that it has 5 fuses (vs. 2 in the '51/2) on the firewall?


'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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'Bolter
'Bolter
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This is from the 1949 owner’s manual.
Attachments
1949 100-450 wiring diagram.jpg (359.64 KB, 54 downloads)

Last edited by jimgmc; 07/26/2025 6:20 PM.
Joined: Jan 2022
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B
'Bolter
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Thanks Jim! Exactly what I needed.


'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.

Moderated by  Jon G, Rusty Rod 

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