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| | | | Joined: Jun 2016 Posts: 182 'Bolter | | 'Bolter Joined: Jun 2016 Posts: 182 | I am trying to wire up my heater and heater switch. I have one wire coming out of the heater (for the fan motor) and two terminals on the switch. I assume the fan motor wire goes to the switch. Where do I get power from? Thanks for any help. | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | The system might allow for a two speed fan, does your switch have 2 positions plus off? Easy to check continuinity with an ohm meter or battery and light bulb. Might be that one Wire goes to one contact on switch, other gets hot by switch movement?
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | You get power from the accessory side of the ign. switch. Hook an inline fuse to it & run the wire to the switch. The other term. on the switch goes to the heater motor. You can get a switch at the parts stores with resisters built in so you can vary the speed.
George
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Get a VOM(bolt-ohm-Meter) so you can figure this out on your own, they even have ones with a noise when one has continuity for those who are blind.
Ed
Last edited by EdPruss; 11/19/2018 12:03 AM.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
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