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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Another wiring question...

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Old Feb 2, 2010 | 08:25 AM
  #1  
Ammoyankee's Avatar
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Another wiring question...

I know many different wing questions have been posed before, but here is mine...

I have an 86 F150 and it had the electronic AM/FM cassette player which had a short, it had the two receptacle hookups. I installed a new Kenwood CD player and I figured out the speaker wiring easily and thought I had the power memory hookups licked too but the stereo will not maintain memory. I hooked the battery wire from the Kenwood to the yellow/black wire from truck harness and the ignition wire to the green and purple (I think) wire. Where did I screw up? I am "electronically challenged" and any help is appreciated! There is also an blue/red wire which I didn't use.
 
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Old Feb 2, 2010 | 10:13 AM
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I thought the red and blue wire played into it. Your best bet would be to probe each one with a test light or multi meter. Constand voltage with the key off will be the memory, and the voltage with the key on only will be wour switched power.

If I remember, it was hard to find the right schematic on the internet.
 
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Old Feb 2, 2010 | 12:34 PM
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Thanks...

Thanks for the reply, I had wires reversed, all is good now~
 
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Old Feb 2, 2010 | 05:48 PM
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I am glad to hear it.
 
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Old Feb 2, 2010 | 06:45 PM
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Lt Blue/Red is for illumination(lighting).It runs throughout the truck to power other accessories like the ashtray light and courtesy lamps IIRC.
 
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Old Feb 2, 2010 | 06:56 PM
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One thing I do with every truck I get is to pick up a secondary fuse box. You can usually get a six circuit box from a parts store for about $10. I just wire it straight to the battery and install it behind the brake pedal. That way I have an easily accessible constant 12 volt source that I can wire all kinds of accessories too. Each accessory is individually fused and it doesn't overtax any existing truck circuits.
 
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Old Feb 3, 2010 | 04:34 PM
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Originally Posted by bghnkinf250
I thought the red and blue wire played into it. Your best bet would be to probe each one with a test light or multi meter. Constand voltage with the key off will be the memory, and the voltage with the key on only will be wour switched power.
The Light Blue/Red stripe wire is just for Radio Dial illumination only. Not used on a aftermarket radio.

If I remember, it was hard to find the right schematic on the internet.
Here are the Factory schematics...

1980-1982: Radio and CB Radio Power and speaker Wiring diagram.
http://i447.photobucket.com/albums/q...l/scan0004.jpg

1980-1986: Windshield Wipers and Radio Dial Illumination Diagram
http://i447.photobucket.com/albums/q...scan0003-1.jpg

1983-1984: Radio Power and Speaker Wiring diagram
http://i447.photobucket.com/albums/q...l/scan0001.jpg

1985-1986: Radio Power and Speaker Wiring Diagram
http://i447.photobucket.com/albums/qq194/darosamarciel/scan0002-6.jpg
 
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