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Under dash electrical #748721
May 22nd 2019 12:32 am
May 22nd 2019 12:32 am
Joined: Mar 2019
Posts: 8
Muskegon mi
R
Rvannen Offline OP
stranger
Rvannen  Offline OP
stranger
R
Joined: Mar 2019
Posts: 8
Muskegon mi
In my 89 e150, the previous owner hacked wires. Im trying to put in the heater control back in but i do not know which wire is hot. Out of the connector are 5 wires and they are yellow, orange /red., orange/ black, black, and blue/red. . Plz any help is appreciated

Re: Under dash electrical [Re: Rvannen] #748777
May 22nd 2019 9:19 pm
May 22nd 2019 9:19 pm
Joined: Jan 2014
Posts: 557
Staunton, VA
kursed Offline
addict
kursed  Offline
addict
Joined: Jan 2014
Posts: 557
Staunton, VA
Not sure about the color coding, but a repair manual should have that info. Also, I would suggest buying a good quality multimeter.


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Re: Under dash electrical [Re: kursed] #749088
May 30th 2019 11:43 pm
May 30th 2019 11:43 pm
Joined: Mar 2019
Posts: 8
Muskegon mi
R
Rvannen Offline OP
stranger
Rvannen  Offline OP
stranger
R
Joined: Mar 2019
Posts: 8
Muskegon mi
Thank you. I do have a nice multimeter. I cannot find any power wire that would go to the heater control switch

Re: Under dash electrical [Re: Rvannen] #749101
May 31st 2019 4:58 am
May 31st 2019 4:58 am
Joined: Sep 2005
Posts: 8,832
Georgia, USA
CatFish Offline
carpal tunnel
CatFish  Offline
carpal tunnel
Joined: Sep 2005
Posts: 8,832
Georgia, USA
A lot of the Fords didn't have 12v to the fan speed selector and resistors. They used the ground side. Varying the resistance to ground.


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