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Trying to attach an Alpine cde-7856 stereo to a 1981 Jeep Cherokee. The wires don't quite match up.

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  • footepath Jul 16, 2009

    Thanks. We have found that the stereo has an orange wire that is not listed in the schematics at all. The Jeep wiring harness has LCD Dimmer and Panel Dimmer wires which do not correspond with anything on the stereo. The stereo has a black/yellow and a green/white (formerly orange) that don't match anything. Ideas?

  • footepath Jul 16, 2009

    The jeep wires match up with the pdf you sent me, as do the alpine wires. Do we connect the ground wires to each other? Thanks

  • footepath Jul 16, 2009

    Clarification: Are you saying cut the jeep ground wire and put a wire connector on it, then use the ground from the stereo and attach that to the frame? Or attach the two ground wires together? Thanks

  • footepath Jul 16, 2009

    Thanks! We'll give these ideas a try and see if any of them work. Hopefully we won't be back.

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LOL no- the wires wont match up :D

CLICK HERE for the PDF manual of the radio (including wire colors)...
And HERE are the wire colors for your Jeep (bottom of the document)...

I am an independent Car Audio dealer and have been in car audio professionally for 17 years.

If you have any additional concerns - please use the "Continue with this expert" option so we are connected in the future.

Otherwise please accept this answer to remove it from the work queue.

Thanks :)

Posted on Jul 16, 2009

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  • blueextc3221
    blueextc3221 Jul 16, 2009

    The DIMMER wire (orange) on the stereo will not be used in your application.

    This simply brightens/dims with the dash lights.... just terminate (tape or wire terminal) the end of the orange wire and tuck it away. In fact this will apply to the Jeep wire harness as well. This unit does not have a dimmer module - so those wires are not used.

    If the radio is used - it may have a generic aftermarket Alpine wire harness that works for all models (including ones with dimmer modules).... but the unit itself is not equipped with that function.



    Are you sure it is BLACK & Yellow... not BROWN and yellow?



    Is the factory plug cut?

    Are you using a wire adapter harness to go to the radio harness??

    If you want - list the colors of wires you have together - and I can verify everything is correct.



    Thanks









  • blueextc3221
    blueextc3221 Jul 16, 2009

    I would suggest using your own ground in a car of this age. Terminate the ground wire from the vehicle... and find suitable metal to screw to.



    Many times - vehicles of this age have poor ground straps to the engine which transfers to the power distrobution box (fusebox) and you will likely get alternator whine and popping noises when you turn accessories like wipers or turn signal on.



    You can do both grounds together and test it out.



    You may get lucky :D



    Thanks

  • blueextc3221
    blueextc3221 Jul 16, 2009

    If the ground wire is still connected to the wire harness (factory) just leave it.

    If you are using a wire harness adapter that is plugged into the factory plug - then you will need to terminate the end of that wire (without hooking it up to the radio).

    Then use the ground from the radio directly to metal.

    If you want to chance that you wont get noise in the system - simply ground the radio ground to the wire harness adapter ground or factory plug ground.



    Thanks.

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