Color coded stereo wiring diagram needed?

MOUSE357

MEMBER
1989 FORD F-250
4.9L
6 CYL
2WD
MANUAL
354,390 MILES

So, I can wire my stereo up. And those wires are not cut. Someone just added wires to them. I don't have money for an adapter so if someone could please help me with the color code I'd appreciate it. Thank you for your time. This is the stereo I took out of it.

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3 Replies

CARADIODOC

MECHANIC
33,752 POSTS

Here's the entire diagram. I expanded the plugs for easier viewing.

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Thursday, April 13th, 2023 AT 3:17 PM

MOUSE357

MEMBER
52 POSTS

CARADIODOC, sorry to bother you again. But a quick question if you could help me please? As far as the LB/R and the O/BK what do I do with those wires? Do I wire them together or do I need them hooked up? Since the one goes to the instrument panel, and the other ties into the Dome light switch. Not trying to mess anything up here. The other wires work I hooked the stereo up. But then realized I still had those 2 wires to deal with. Thank you in advance for your time.

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Saturday, April 15th, 2023 AT 3:09 AM

CARADIODOC

MECHANIC
33,752 POSTS

Those two wires will not be used. With the original radio, the orange / black tells the display to dim when the headlights are turned on. The light blue / red comes from the dash light dimmer and tells the display how much to dim. Ford has always done everything very differently from all other manufacturers. This dimming system is a perfect example. I'm right in the middle of building a new radio workbench, and for the first time I'm going to be able to test remote amplifiers and display dimming operation. I have to build two totally different display circuits, one for Fords and one for everything else.

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Saturday, April 15th, 2023 AT 6:05 PM