Question about 1985 Nissan 300ZX

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1985 300zx antenna & wiring

When i first got my 300zx some dummy had cut off the wiring harness to the stock radio, and the wires to the speakers that are under the passenger seat coming from the amp. which controls the antenna and steering wheel controls, i found a antenna switch at a junkyard and plugged it in the the antenna harness, whenever i flip the antenna switch, it just makes a clicking sound, i can pull the antenna up manually and it will stay up, but if i flip the switch it goes down.
also i have to manually turn the aftermarket radio on/off everytime i get in/out of the car, is there a ignition wire that i can hook the radio to?

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On the fuse box behind the driver side left kick panel find the Radio fuse and connect the main power to that remember to keep the full time power connected to the proper wire so your clock (if you raido has one) will keep correct time. If you are not sure which wire on the radio is full time power and which is the on off power check the manufacture web site for information or call there help line. From the radios I have done and I am no expert beleave me but the ones I remember always used Red for the main power (the one that should be switched so the radio comes on with the key and not have to be turned on and off) the full time power for the clock and memory features is usualy yellow. Black or green can be ground but use caution as these could also be speaker wire colors. If you cant find the fuse location from the original radio you can use a simple volt meter or just a 12 volt light blub with two wires attached. simply take the negitive side and place that wire on a bolt that is screwed into the car metal body or frame or to a known ground wire. take the positive end and start touching the positive wires on the back on fuse box. if you start with the key off you know everyone that lights up has constant power so mark them with one color perminate marker. next turn the key to ACC. and see which of the non marked have power and again mark them with a different color (one of these will be the one you want to use just make sure you pick one with a small fuse as most radios will melt long before a #25 fuse blows again check the manufactures spesifications for the proper fuse range to use. Now the only thing left to do is to turn the key to on and make sure the power sorse you plan to use stays on withthe key in on as well as acc. now connect the red wire to the source chosen and leave everything else alone and you sould be fine. I can stress this enough you should always check with the manufacture of the radio before playing with the wires to make sure you dont put the wrong one in the wrong place because doing so can dammage the radio of worse your car. Also keep in mind I am not a professional and am offering the way I would approch this problem if it were me doing it. If possable your best bet is to take the car to a professional so you have some assurances it is done correctly and you wont come out one day to find your car has caught fire and is a pile of ash because you put this wire where that one went and didnt notice anything. Good luck

Posted on Jan 12, 2009

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