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I tried to install a radio but im not getting any power to the stereo when I turn the car on to acc.

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Ok did you hook up red to ignition and yellow to constant power?

check all the fuses car and back of head unit

if worse comes to it connect red and yellow to geather and send it straight to the positive on the battery with a fuse but u will have to turn the radio on and off by your self not the ignition

Posted on Jul 04, 2008

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I have a vy commodore im trying to install a sony xav 701bt stereo but cant get it to power up?


Do you have switched power from the ignition switch to the radio? Have you verified with a test light or meter that power is available?

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IBR-WHCR2 wire harness extra yellow wire


The wire to which you refer applies power to the radio with the ignition switch in the ACC position and also maintains power flow to the memory when the radio is off. The proper connection should be apparaent from the installation instructions that came with your Metra adapter.

Dec 21, 2013 | Metra Car Stereo Wire Harness IBR WHCR2

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Where does the acc wire connect to.


ACC wire connects to the accessories wire from the ignition switch so when you turn the key on acc you can listen to the radio without starting the car.

Feb 21, 2011 | Metra Car Radio Stereo Dash Install Kit...

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I have power going to the unit yet there is no display,a sony cdx-gt220,i know i have power because it is loading and ejecting cds yet no display.please help,its doing my nut in!!!!


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.

Jul 16, 2009 | Sony Xplod Car Audio CDX-F7810 - CD/MP3...

1 Answer

What are the 2 extra wires on the back of my 2001 delco radio


the purplr wire are data wires and are needed to hookup to the olds alero computer to allow it to turn on. these radios do not use acc. power wire to turn on. they get a data signal from the Body control module in the car it is installed originally. If you know what you are doing you can hookup up a BCM from a diiferent car and send the data from it to the radio. but takes alot of time and knowledge.

Jul 14, 2009 | 2001 Pontiac Grand Am SE

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My radio and cd player or lighter doesnt work. but my clock does.....what is wrong!


Change out your ACC Relay. It is located on drivers side behind kick panel in fuse box. It is Black and rectangular shaped. Check for moisture. Many times water comes off driver door Chanel right into fuse box. Open driver door look for holes in front panel. ACC Relay is under 10 bucks at auto parts store.

Jul 04, 2009 | 2003 Ford Escape

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DehP6700 mp restet everytime keys is turned on.


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.

Nov 13, 2008 | Car Audio & Video

3 Answers

Won't turn off or on automatically


You must have the yellow and the red wires tied together on a constant voltage source.

Only the yellow wire should be on a constant voltage source.

The red wire should only get voltage when the ignition is turned on or in the acc. position.

You need to rewire the red wire on the radio.

Let me know if it helps.

Jun 07, 2008 | Kenwood KDC-MP4028 CD Player

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