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I would like to install this deck to an old 1974 chevy sports coach RV that still had the oem 8 track player in it. I got the old deck out and fit the hole for the new one. Then I began to try to figure out the wiring...well the rv has 3 black wires, 1 blue and one red coming out of it. I know the blue and red are for right and left speakers and it appears two of the black one converge together and route to a speaker switch to control the front and rear of the vehicle. That only leaves me with one black wire left as the power source. Basically, I am lost at this point and wondering now if it is even possible to hook this thing up here. There is no wiring harness on the RV...it was simply these wires running directly to the old deck. Any help would be appreciated...

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  • Chris Fisher May 27, 2011

    The current wiring has 2 speaker wires...one for front and one for rear. The stereo has 8 speaker wires...a positive and negative for both front and both rear. How do I wire the 4 speakers that only have two wires at the front? Or do I assume the speaker wires are split and just wire in 1 front and 1 rear from the deck?

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Put the contact on the ignition key and use a multimeter set on voltage to locate the power wire - it will be the only one with 12 volts on it. Then determine if the system uses a separate ground wire or the grounding is done thru the metal fitting on the hole - set the multimeter on resistance and measure the resistance between it and another part of the body, it should be less than 0.2 ohms. Then locate the speakers wires - you will locate one when the resistance between the wires and themselves or the ground will be 4.5 ohms. That is all.
You will have to add a radio antenna with its wire yourself if you need it.

Posted on May 26, 2011

  • Azrael SRL May 27, 2011

    The new stereo has the capability to power 4 speakers so it has 8 wires for them: 4 for the outputs and 4 for the ground. In your case the ground wire is not there it has been replaced by the body so the 4 ground wires in the stereo connect to the body. For the rest, you do not need to connect all of them - you could connect just one of each (as you thought). But the best solution is to join the 2 front and rear wire outputs on the stereo and make them drive (connect to) the single front and rear speaker in your RV

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