Could I wire heater blower motor switch to fuse box using unfused spade on fuse box? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HeavyHauler · 03-02-2025, 01:52 PM

On my 68 C10 I dont have a brown power wire from the heater blower motor switch on the dash that leads to the fuse box. My C10 is a factory heater only truck.

I plan to make my own power wire and plug it into the fuse box at the terminal that is labeled IGNITION UNFUSED. I figure that I will add an inline fuse the same as what the heater fuse is.

Will this work without causing problems? I already installed a new blower motor harness which connects the blower switch at the dash to the blower motor resistor and to the blower motor.

**HO455** · 03-02-2025, 10:00 PM

Yes you could. My Burban was wired that way when I got it.

truckster · 03-02-2025, 10:09 PM

As long as you do it the way you describe, with an appropriately rated inline fuse.

HeavyHauler · 03-02-2025, 11:55 PM

Awesome! Thanks guys. I wasnt sure how difficult it would be to remove the fuse box and run it from behind the box but this way would seem to be just as good.

03-02-2025, 01:52 PM	#1
HeavyHauler Registered User Join Date: Nov 2011 Location: USA Posts: 446	Could I wire heater blower motor switch to fuse box using unfused spade on fuse box? On my 68 C10 I dont have a brown power wire from the heater blower motor switch on the dash that leads to the fuse box. My C10 is a factory heater only truck. I plan to make my own power wire and plug it into the fuse box at the terminal that is labeled IGNITION UNFUSED. I figure that I will add an inline fuse the same as what the heater fuse is. Will this work without causing problems? I already installed a new blower motor harness which connects the blower switch at the dash to the blower motor resistor and to the blower motor. Attached Images

03-02-2025, 10:00 PM	#2
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,605	Re: Could I wire heater blower motor switch to fuse box using unfused spade on fuse b Yes you could. My Burban was wired that way when I got it. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 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 The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

03-02-2025, 10:09 PM	#3
truckster Registered User Join Date: Jan 2001 Location: Orem, Utah Posts: 8,021	Re: Could I wire heater blower motor switch to fuse box using unfused spade on fuse b As long as you do it the way you describe, with an appropriately rated inline fuse. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

03-02-2025, 11:55 PM	#4
HeavyHauler Registered User Join Date: Nov 2011 Location: USA Posts: 446	Re: Could I wire heater blower motor switch to fuse box using unfused spade on fuse b Awesome! Thanks guys. I wasnt sure how difficult it would be to remove the fuse box and run it from behind the box but this way would seem to be just as good.

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