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Click on image for the lowdown. 
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| | | Forums66 Topics128,086 Posts1,056,099 Members48,434 | | 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!
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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: Dec 2003 Posts: 2,953 'Bolter | | 'Bolter Joined: Dec 2003 Posts: 2,953 | On my 49 I have two wires. One from the ignition switch to the heater switch and then to the fan motor. The other wire is a ground which is attached to the heater shell. I put an in-line fuse between the ignition switch and the heater switch. The heater switch is basically a rheostat which varies the fan speed. | | |
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