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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 12-13-2010, 02:02 PM
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Question Radio Wiring Diagram

Does anyone have a picture of the radio wiring diagram for an 88 250? If you have the diagram for the light dimmer switch that'd be awesome too! Thanks ahead of time!
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Old 12-13-2010, 03:48 PM
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Radio:
Click the image to open in full size.

Radio Illumination:
Click the image to open in full size.

Dimmer switch:
Click the image to open in full size.

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Old 12-13-2010, 03:49 PM
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x2 above subford beat me...
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Old 12-13-2010, 04:28 PM
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Thanks. My dash lights weren't working so I pulled my radio out to see of there were any wires hooked up wrong. The previous owner had the ground hooked up to the LB/R wire which was the illumination wire. Hooked my ground up to the correct wire and problem fixed!
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Old 12-13-2010, 06:21 PM
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related to the radio...has anybody swapped in a new radio with a cd player or the sort? Iv been looking into it but how in the world does the antenna disconnect at the back of the radio? I have a 1991 F250
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Old 12-13-2010, 06:55 PM
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It pulls out.
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Old 12-13-2010, 11:07 PM
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I put in an Alpine CDE-100 and love it. And the antenna just pulls out.
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Old 12-13-2010, 11:19 PM
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I just found out that the "illumination wire" in the adapter harness for our trucks is not actually attached to the dimmer switch for the interior lights. The only way to actually get your head unit to dim with your interior lights would be to run a wire directly from your dimmer switch to the illumination wire on the head unit. Otherwise you are better off just capping off the wire because it does nothing. This is according to tech support from crutchfield.com
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Old 12-14-2010, 07:26 AM
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Quote:
Originally Posted by illini5190 View Post
I just found out that the "illumination wire" in the adapter harness for our trucks is not actually attached to the dimmer switch for the interior lights. The only way to actually get your head unit to dim with your interior lights would be to run a wire directly from your dimmer switch to the illumination wire on the head unit. Otherwise you are better off just capping off the wire because it does nothing. This is according to tech support from crutchfield.com
This is on a 2002 Ford?
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Old 12-14-2010, 10:13 AM
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That is correct. Like I said that is at least what the people from Crutchfield told me. I haven't actually traced out the wire on the wiring diagram itself to confirm it.
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Old 12-14-2010, 10:39 AM
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Not true, here is the 2002 wiring diagram, radio is at the bottom right.:
Click the image to open in full size.

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Old 12-14-2010, 10:43 AM
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Well what the heck those people lied. Now I'm going to have to tear my head unit back out and connect up that wire. Thanks for setting me straight. They sounded like they knew what they were talking about but obviously didn't.
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Old 12-14-2010, 11:40 AM
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Here is a blowup of the radio area.
It would be the radio pin#1.
Click the image to open in full size.

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Old 12-14-2010, 11:40 AM
 
 
 
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