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I'm in the process of putting in the Painless Wiring Harness in my 55 F350. I changed it over to 12V and bought a new 12V heater motor; it has 5 wires (a black wire I'm assuming is the ground, red wire I'm assuming is the hot, a yellow wire - have no idea, orange wire - have no idea, and green wire - again no idea. Now the baffling thing the switch has three terminals marked "B" - I assume for the hot from the ignition, "L" for low speed, and "H" for high speed. So where do all of the wires go? I've checked mid-fifty and their instructions are for a sixty something car.
sounds like you need to figure out what year the switch and heater are for and copy the wiring for that year. But since you have different number of wires vs terminals on the switch, you might have a switch from one type of heater and the motor is from another.
Orange is high speed , Red is low spSingle Shaft Blower Motor 5/16" Shaft Reversable 5 Wire
Single Shaft Blower Motor 5/16" Shaft Reversable 5 Wire GR-157
[QUOTE=firstrider;16348611]Orange is high speed , Red is low spSingle Shaft Blower Motor 5/16" Shaft Reversable 5 Wire
Single Shaft Blower Motor 5/16" Shaft Reversable 5 Wire GR-157
Thanks, firstrider, that makes alot of sense. I had bought a 12V CW motor from Vintageford.com. I also bought a 1951-55 heater switch. But I'll give that a try: Orange to the H terminal, Red to the L terminal, Yellow to ground, and a hot wire to the B terminal.
Orange is high speed , Red is low spSingle Shaft Blower Motor 5/16" Shaft Reversable 5 Wire
Single Shaft Blower Motor 5/16" Shaft Reversable 5 Wire GR-157
Ok, hooked up the heater switch with the Orange to "H" and Red to "L" and a hot from the ACC Terminal from the ignition switch. Put yellow to ground (I didn't read the your whole post) and the fan made electrical noises but wasn't turning - even with my hand in there coaxing it. So I went back to the instructions and connected Black, Green (only because I don't have a Blue wire), and Yellow as ground. Again the fan only made electrical noises and still didn't turn with my coaxing. I thought I would hook the motor up as a CCW, thinking VintageFord may have sent me a CCW rather than a CW (even though the invoice says CW); that's where I found from your post the ground combinations are just reversed - same wires. So am I missing something?
I would try the motor out of the truck with a couple of jumper wires and a battery so it is easy to change connections around to get the motor turning like you want then figure out how to wire it up in the truck.
Just wanted to let everyone know that, "BERTHA LIVES." My 55 F350 Flatbed, that I've been working on for 3 years and hadn't ran for decades just came back from her maiden cruise with my 93 year old Mom as my passenger. We drove down to the mile marker near our house and back. There are no windows so Mom was a little wind blown. Now if I could get that darn heater motor wired I can button up the dash.
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