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Old 01-28-2025, 10:20 PM   #2
HO455
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Join Date: Feb 2016
Location: Portland Oregon
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Re: Cigarette Lighter and Blower Relay Wiring Questions

Its my experience that GM typically doesn't fuse the cigarette lighter which can be problematic. I had a lighter short out internally while driving down the freeway in my old S10.

I don't smoke and never used the lighter but out of the blue one day smoke starts billowing out from the dash area where the lighter is. Needless to say I made a sharp right to the side of the road and started tearing wires out of the dash.

I believe that the cigarette lighter and the high speed fan power can share the same connector at the fuse panel. The link explains the circuit as well as has the wiring diagram.

http://67-72chevytrucks.com/vboard/s...d.php?t=705082
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1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo
If it breaks I didn't want it in the first place
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