Question about Pioneer KEH-P4020 Cassette Player

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Stero not coming on

I have hooked up my stero all wires in the right place all fuses good but the unit will not turn on

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What kind of car do you have? This can make the difference. Many cars with small engines (eg. Geo Metro) simply do not generate enough power to operate the radio. Other times the car can generate enough power to support the radio, but when you plug something into the cigarette lighter/power outlet the radio shuts off because the car isn't powerful enough to handle both. The first thing you need to do is to make sure that the car's electrical output is sufficient to operate the radio, after that it would be a good idea to make sure that all of the wires are connected properly.

Posted on Nov 20, 2008

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Do you have a good ground for the black wire? If you have a good ground, the problem may be a blown fuse in the car. There are two wires requiring power on an aftermarket car stereo, yellow wire – constant power, and the red wire – switched power with ignition on. There are usually two fuse panels, in the passenger area and under the hood near the car’s battery. Check all fuses.
Troubleshooting – with ground wire connected, connect both the red and yellow wire from the aftermarket car stereo together, then connect both to the constant power wire in the dash and test stereo. Then with ignition on, connect both to the switched ignition wire. Stereo works only when connected to one wire in the dash? You have a blown fuse on the other power wire.

Posted on Nov 13, 2008

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1 Answer

The color of the wire is red. Instead of getting a harness can I just connect it to a red wire under the dash. But there is two red wires under it


no you cant just hook it to a red wire because its red. what are you hooking up? im assumeing a stero, you can however hook up it without a "harness" but you need to know what you are hooking up. since its red its most likely a power wire on your stero but not always the case on the vehicle. also some wires are switched power or "remote" power meaning when the key is turned off they are not electricfied or "hot" and some are constant meaning they ar always hot. give more details and i can help more.

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Where do you connect the memory wire on a jvc kd g110 car stero.....what color is the memory wire ?? what does hook red wire to acc fuse mean??? what wire does the red wire on the radio connect to on...


The yellow wire is most likely the memory wire as it needs to be connected to a constant 12 volt source.

"Hook red wire to to acc fuse" means you need to hook into the fuse block under an Accessory Fuse. (ie: something that can't be turned on unless the car is running or the key is in the "Accessory" position)

The red wire is explained above. It does not connect to the harness.

Just remember that the yellow wire needs to be hooked to a constant 12 volts and the red needs to be hooked to a circuit that is only active when the car is running or switched to the "ACC" position.

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It sounds like you have some wiring issues, moreso issues with your speaker wiring, or your speakers. I would first test the speakers, 1 by 1 using a double A, or AA 1.5v battery. Each speaker wire pair should be tested by attaching 1 wire to the negative side of the batter, and momentarily making contact with the other wire to the positive side of the battery. A low popping/scratching sound should be heard from each speaker. If not, replace each defective unit. Also, double check your wires to ensure they are not damaged.

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I put the headdeck back in and pinched a wire have i blown the fuse in the stero or car fusebox? there no power in it atm the stero i mean


take it back out check for naked wires and if insulated good ,then look on back of the deck there should be a fuse if its bad replace it ,and check the fuse box under the hood and on drivers side under the steering wheels left side fuse box,theres 3 fuses usally to the stereo check them all.if my info was of any help to you please leave a comment thankyou.

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1 Answer

How do you check the fuse on my dual car stero


it shud be in the back of ur unit rite where the wires are ,plug th wires off & ur fuse shud be rite there.

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if you had the speakers hooked up wrong it would just make a crackling sound when it rubs on a surface. if your vehicle has a factory built in amplifier somewhere you may have to hook up the remote turn on wire to the wiring harness to tell it to turn on.
also make sure your illumination and dimmer wire are hooked up correctly if it doesnt display any images on the screen. and if for some reason you think its shutting off because of crossed wires maybe check the ground the batt and the ignition wire ,or the red black and yellow wires. usually when something major like those three wires get crossed it blows fuses in the car taillamp fuse stereo batt fuse ect. check all those .try resetting the deck of the car battery thats all i can think of now.

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1 Answer

When I turn off my car my stero resets all it's setting


Mike
Here is a owners manal and wire diagram on page 55. You have the yellow wire hooked up wrong need to put to a constant hot not one on a switch.
http://inform3.kenwoodusa.com/manuals/KDCX889.pdf
Good Luck

Dec 18, 2008 | Kenwood KDC-MP628 CD Player

1 Answer

Not Working


My only suggestion is to check your wiring.
Be positive your accessory wire [red wire] is hooked up to the correct wire from your car's wiring harness.
To be positive this is the problem, connect both the red and yellow wires [accessory and battery] coming from your head unit to the battery wire from the car's harness temporarily.
Do not, however, leave your head unit wired this way. It will never shut off and drain your battery.
If your head unit still does not turn on, and you say the fuse is good, you most likely have a bad head unit.
Most head units now have a fuse in the back next to the wiring harness as well.
Don't forget to check that one as well, in case you missed it.

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