Question about Pioneer DEH-P2500 CD Player

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No power to my player

I have an older car, so i know my wiring harness may be bad. but other then that, how do i power it up and have it give sound to my speakers without using my wiring harness (besides speakers)?

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Hi,

A Pioneer DEH-P2500 power wiring would include:
* Black - chassis/body ground (GND)
* Yellow - always on B+12 such as the + terminal of the battery;
* Red - switched on B+12 such as the ACC terminal of the IGN switch.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Mar 21, 2008

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1 Answer

What would cause no sound from my pioneer stereo


The harness might not match. Check the wires find out the where the speaker wires are and see it they go to the radio. I have had the same problem before in my shop someone cut off the harness got one from a year older and it didnt match few wires where off it would light up but no sound. Easy fix.. If thats not it got a few ideas let me know.

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Possible scenerio's with the little info you gave.

1.You have a bad speaker thats blown or the wires are touching the chassis of your car.

2. You have a factory amp and you need to connect the blue wire to the amp turn on wire. And if it still doesnt work then you have to rewire it complete or maybe have to get a special car amplifier compatible harness so your aftermarket works with your amplified system in your car.

3. In certain Ford cars they crisscrossed the back speaker wires. To test this unplug your harness from the radio. VERY IMPORTANT( splice these colors of wires in the middle enough so you can use a 9volt small rectangular battery to make the speakers you want to test pop(harmless))
1. green = back left + speaker
2. green/black = back left - speaker
3. purple = back right + speaker
4. purple/black = back right - speaker

test green speaker wires first touch battery to the + and - and the speaker should pop if not you have already discovered the problem. Know this time pop the green + and the purple/black - on the 9volt battery if the speakers pop you have found the solution.

Just criss cross the the negatives of the back speakers. From the radio harness end attach green to green, purple to purple, green/black to purple/black and last purple/black to green/black. And all your speakers should work again.

Dont ask me why late Ford Models crisscrossed their speaker wires. They just did.

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Hello susanmillan,

If it's not the head unit, and it's not the speaker, then it must be a problem with the wire going to the speaker. When you hit a bump, the wire shorts or opens intermittently causing the faulty sound. Some insulation could have rubbed off. There could be a bad pin in a connector. The wire could have some broken strands. It could have become pinched against something sharp.

The good news is, it's really an easy fix. Just have your installer make sure that the sound is OK at the wiring harness itself, and run a new wire from there to the speaker.

Hope this helps.

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Your fuses are most likely out. The thing is, is that if any of those wires touch you can blow out some fuses, that may mess with the odometer, gas, oil and temp readings. More than likely your fuses have busted when you were changing out or even when you ran that wire directly from the battery.

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Hope that i could help you out. If worst came to worst, you would probably just need a continuity tester to see what wires were giving power, after you changed those blown out fuses.

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Not for sure if I can help.Someone forgot the golden rule.NEVER CUT THE WIRING HARNESS.I dont have the wiring scematics in front of me but the older models had RED for power,BLACK for ground,and the wiring going to the spreakers should be an off color running together going to the speakers.Probably has a six speaker system.Hope I helped.

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More information would be required to help you with this problem properly. If you are using an amplifier and have no sound from it, you may just have the remote turn on of the amplifier not connected. The radio should have a blue wire coming from it and that would be the wire that goes to the amplifier to turn it on when the radio is turned on. If the radio has no sound coming from the speakers connected directly to the radio, you may have a bad speaker, bad speaker wire, or even have the speakers connected wrong.

If you can please give me more information about the install, like what model radio, what type of amplifier, how you have connected the wiring, how many speakers and what the speakers are connected to (an amp or the radio), I can help you figure out the problem. But please understand, since I am not there to look at your install, I can not know how you have connected everything. Are you using a universal wiring harness to connect to the factory harness and your radio? Have you added extra speakers? What wires have you connected to the speakers? If you have an amplifier, have you connected the RCA output of the radio to the RCA input of the amplifier? There are many things that must be connected properly for a sound system to work, if you are not familiar with how they connect together you really should have a professional do it for you. If you furnish the needed information I will be glad to help you further. If you do not furnish the needed information there is really nothing more I can help you with.

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I need to know what colors mean what, so i can hook my cd player up


Red - Power
Yellow - primary power must be joined to the red
blue - Remote
Black - ground or negative
To find your speaker wires check the color of the cord behind each speaker than match it with the same color in the dash.
or the easy way is to use a normal 1.5v penlight battery and try each speaker cord behind the dash and listen to which speaker give off a crackling noise so you can get the balance on the cd player right.
If u trying to find power in the car and don't have a tester than get a 12v light or bulb join the negative to the body and push the positive wire into each one of the holes in the factory plug in the dash one at a time until the light comes on. That is your positive the rest is easy. (DIY guru)

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1 Answer

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Id call you local stereo shop. I changed the head unit out in my old acura legend and had the same problem. You need to buy a special harness for the bose. Each speaker had its own amp, so i just rip it off and wired the speaker direct and trashed the amps. Now this was an older car and speakers were almost shot so no biggie. I would not recommend you doing that on and 04. Just call your local stereo shop and they should hook you up.

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REgards
D

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