Heater electrical question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

woodwright · 03-08-2012, 09:38 PM

I am building a 70 K10. I am adapting the heater assembly from a mid 80's non-AC chevy truck, and the controls from the rear heat of a 93 suburban. Confused yet?

Anyway, on all 3 of the systems, there is a three wire plug in the housing just upstream of the blower motor. On the inside, it just looks a couple of springs mounted together. What is it? Is it some some of heat sensor or safety switch? I'm using the servo motors and wiring from the 93, and need to know if those switches are the same.

And I would love a wiring diagram of the rear heat system of the 93 suburban. Thanks,

Clint

woodwright · 03-08-2012, 09:58 PM

Did some searching. like I should have done earlier.

Its a resistor for the fan motor. I'm thinking it will work just fine.

1Bad65GMC · 03-09-2012, 05:00 AM

If you are moving it while adapting. Just make sure to keep it in the air flow so it does not over heat and burn out.
Posted via Mobile Device

woodwright · 03-09-2012, 11:39 PM

Alright, next issue. I'm using the control panel, wiring and servos from the 93 suburban rear heat. The servos are just a small electric motor, circuit board and a gear reduction. The way i need to mount them, they move backwards. They've go three wires going to them, can I change a couple of wires around? I can't find a wiring diagram for it.

03-08-2012, 09:38 PM	#1
woodwright Enjoying left field Join Date: Jun 2008 Location: Dillon Montana Posts: 900	Heater electrical question I am building a 70 K10. I am adapting the heater assembly from a mid 80's non-AC chevy truck, and the controls from the rear heat of a 93 suburban. Confused yet? Anyway, on all 3 of the systems, there is a three wire plug in the housing just upstream of the blower motor. On the inside, it just looks a couple of springs mounted together. What is it? Is it some some of heat sensor or safety switch? I'm using the servo motors and wiring from the 93, and need to know if those switches are the same. And I would love a wiring diagram of the rear heat system of the 93 suburban. Thanks, Clint __________________ Clint 70 Chevy 4WD "Ultimate Work Truck" SOLD

03-08-2012, 09:58 PM	#2
woodwright Enjoying left field Join Date: Jun 2008 Location: Dillon Montana Posts: 900	Re: Heater electrical question Did some searching. like I should have done earlier. Its a resistor for the fan motor. I'm thinking it will work just fine. __________________ Clint 70 Chevy 4WD "Ultimate Work Truck" SOLD

03-09-2012, 05:00 AM	#3
1Bad65GMC Registered User Join Date: Oct 2011 Location: Sacramento, Calif Posts: 70	Re: Heater electrical question If you are moving it while adapting. Just make sure to keep it in the air flow so it does not over heat and burn out. Posted via Mobile Device __________________ 1998 GMC Suburban 2500 454 4X4 1984 GMC Jimmy - 3/4 ton axles, 5.7TBI 1990 GMC Suburban (Parts Donor) scrapped 1965 Buick Riviera - (Sold) 1999 Mercury Grand Marquis 1965 GMC SBSS (Sold)

03-09-2012, 11:39 PM	#4
woodwright Enjoying left field Join Date: Jun 2008 Location: Dillon Montana Posts: 900	Re: Heater electrical question Alright, next issue. I'm using the control panel, wiring and servos from the 93 suburban rear heat. The servos are just a small electric motor, circuit board and a gear reduction. The way i need to mount them, they move backwards. They've go three wires going to them, can I change a couple of wires around? I can't find a wiring diagram for it. __________________ Clint 70 Chevy 4WD "Ultimate Work Truck" SOLD



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