Can anyone help. My car stereo has lost its power. There is power to the unit, both on the constant battery and ACC wires and through the in line fuse. The unit just will not light up. Any ideas please?
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Re: No Power to the unit
Wiring harness you hooked it up wrong i cannot stress enough that messing with sterio's by self will mess up factory cars harness take old harness out redo the wires make sure there hooked together right if you have too just take it too any car sterio installers and they will splice the wires together for 5 bucks the right way so all you have to do is plug in and mount back up
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Most, if not all cars will shut off accessory power when cranking so that the starter has plenty of current. If your stereo doesn't come back on again once the car is running, that's a different story... is it a cheap and nasty unit?
Connect black to earth or battery negative. Connect red to battery positive or the acc lead from your ignition switch. If connected to acc the unit will power down when the vehicle is switched off. If connected to battery positive it will remain on irrespective of ignition switch position. Connect yellow to battery positive for memory power. The moment this lead loses power all the settings/memory on the unit will be lost. Leave a comment if you require further assistance
well it sound like your ground wire is not connected the properly way this wire is black make sure
the other 3 are connect right are Yellow is constant power ,Red is acc.ingnition,Blue is the remote.
that would complite your conection done.
Not to question you about the red being constant power but I have a pioneer deh-1600 car stereo and red is hooked to electric terminal controlled by ignition switch (on/off) and if your unit has a yellow wire that goes to constant power. The only problem with hooking up the red wire to constant would be if you happened to accidentally leave your player on it could drain the battery. Hope this helped a little. Good luck.
The radio either does not have the yellow power wire connected(constant 12v) or the wire is connected to a switched source and when the key is turned off the radio has no backup power. You will need to pull the radio out and verify the yellow wire is not connected to switched voltage and connected to constant power. It is also possible that they have the red and yellow wires mixed up. Remember yellow constant power and red is switched power(with ignition key). And also disconnect your negative battery cable when working on the electrical system of your vehicle...you may short something out and damage your vehicle's electrical system or head unit.
red -Acc power yellow -12 memory power black -ground blue -amplifier remote blue/white -power antenna SPEAKERS white left front + white/black left front - grey right front + grey/black right front - green left rear + green/black left rear purple right rear + purple/black right rear -
I have a Sony CDX GT 530U. I had a problem with no display and I thought no power period. I did not try to install a CD, so maybe I did have power to the CD motor but no display. This was frustrating because I could get the old factory Nissan radio to power up and work so I thought I had a dead Sony unit. After a lot of monkeying around, I discovered I had blown a fuse while installing the unit (you should disconnect the negative terminal of the battery when installing the radio... which I thought I skip, that was a no no.). I had checked the auto fuses, those cheap little plastic fuses behind a panel below the stearing column inside most cars, at least all the fuses I thought went to the car stereo. Turns out I missed one that was labeled "Batt" or something like that, which was the constant power wire to the car stereo. There was another fuse for the Accessory power to the car stereo (the main juice went the key is tuned to ACC or Start position). Turns out the Sony unit display runs off the constant power, or at least the unit on/off button runs off the constant power wire, so even though the ACC power wire was live, the Constant power wire had a blown fuse and the unit would not turn on. Check all your fuses inside the car, I bet that's your problem. Constant power on my Nissan Sentra was a 7.5A fuse, while the ACC power ran off a 15A fuse, but your vehicle may vary. Good luck.
first red is ignition or acc (turns off and on with the key) yellow is constant power (always hot keeps memory) orange is illumination (lights up radio) if vehicle doesnt have a seperate illumination wire connect it to the ignition wire. now process of elimination your ground is correct because it worked with all wires to acc your acc works because u had all them connected to it and it worked your problem is in your yellow or constant/memory i suggest u test it again take piece of wire any old thing long enough will do and run the wire directly from the battery under the hood and just run it outside the car through the window and connect it directly to the yellow wire make sure u have a good connection at the battery on the positive side if u have test light or volt meter test the wire before connecting it to the radio if it works then u know there is a problem with the wire from the vehicle (fuse wrong wire bad wire ) if it doesnt work make sure ground is connected tight and that paint is cleaned of the surface where ground connects and that the yellow wire to the radio is tight in the back of the radio.
The correct wiring is constant power on the yellow wire, switched power on the red wire. I'm not certain why you weren't able to get it to work in this configuration; the unit needs power on both wires before it will turn on, but if you lose power on the yellow wire the settings will be lost.