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Click on image for the lowdown. 
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11 members (Rusty Rod, klhansen, David Bush, greenie-reddy, Cosmo, Lightholder's Dad, Peggy M, 3800GUY, Oswald, Wally / Montana, 1 invisible),
49
guests, and
1
robot. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,074 Posts1,055,911 Members48,429 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jun 2010 Posts: 301 'Bolter | | 'Bolter Joined: Jun 2010 Posts: 301 | I've taken the factory diagram and have cleaned it up a bit and using service manuals and assembly manuals I have gleaned info on the color code and have just about finished colorizng the diagram. Anybody interested in a copy just PM me and when it's done I will email you the jpeg file. I'm using this to re-wire my 49 3600' under restoration.
1949 Chevy 3600
1975 W-25 Hurst Olds
1970 GMC 1/2 ton Fleetside
2010 Chevy Silverado
| | | | | Joined: Dec 2003 Posts: 2,953 'Bolter | | 'Bolter Joined: Dec 2003 Posts: 2,953 | Sent a PM a few days ago. Thanks | | | | | Joined: May 2015 Posts: 6 'Bolter | | 'Bolter Joined: May 2015 Posts: 6 | Hi, I am restoring a 49 3600 also and could use alegible copy of the wiring diagram. Also trying to figure out why the parking lights are not working. Thanks | | | | | Joined: Aug 2011 Posts: 226 'Bolter | | 'Bolter Joined: Aug 2011 Posts: 226 | If your original wiring was like my original wiring, I am surprised anything works! | | | | | Joined: Mar 2006 Posts: 249 'Bolter | | 'Bolter Joined: Mar 2006 Posts: 249 | Nevermind.
Last edited by Gazz; 06/06/2016 3:49 PM.
1950 3600
1951 4400
Gazz
| | | | | Joined: Dec 2000 Posts: 3,399 Gas Pumper | | Gas Pumper Joined: Dec 2000 Posts: 3,399 | http://devestechnet.com/Home/ADWiringSystemThat is for a 1953, but they are very close. I just finished that article, so let me know if its missing anything. | | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | That diagram by b lord is outstanding
Easy to read | | | | | Joined: Dec 2000 Posts: 3,399 Gas Pumper | | Gas Pumper Joined: Dec 2000 Posts: 3,399 | Yes. Hoping the new one will be even better! | | |
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