Question about Pioneer DEH-1900MP CD Player

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My radio memory cant remember the channels after i have turn off the car power

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The yellow wire from the stereo should be connected to a constant 12volt power source (battery). This controls memory for the stereo.

Posted on Apr 04, 2011

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Most radios always have power maintained to keep their channel memory. You would have to remove radio and put switch in to disconnect both (main and memory) power

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Sounds like you don't have the tuner wired properly, IF you have a stand-alone tuner, then you need one wire to a continuous 12VDC for memory, the other 12VDC that's hot in accessory position, and then the ground. IF you hook the two 12volt wires together and they're only on when the car's on, then you will lose your memory of what channel it's on. Also, when you turn the radio off, turn it off with the BUTTON - not just by turning off the car. Give it a try using the radio's POWER BUTTON for on and off, NOT just the ignition, then it will remember the channel most of the time. Okay?

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Now, make sure that you leave the radio ON Channel 1 for at least a half an hour. You should then have your channels back - when you do get all your channels back, turn the radio on and off with the POWER switch, not by unplugging the unit, or pulling it out of the dock or turning off the car. Okay?

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From www.Cobra.com


"Where do I connect the three power wires? (radios with 3 power leads)
Answer: Connect the black wire to chassis ground.

Connect the red wire to a switched +12 volt source, such as the fuse for the AM/FM radio.

The orange wire is for the memory retention of your CB radio, and should be connected to a constant +12 volt source. The fuse for the brake lights is usually a good choice.

With the radio wired as above, the radio will turn off when the ignition is turned off. The orange wire will provide power to the radio so that it remembers the channel.

If you are installing your Cobra CB radio in an application where you wish to utilize a cigarette plug to power the unit, connect the black wire to the negative lead (side terminal) on the plug. Connect both the red and orange wires together to the positive lead (center tip) of the plug. Your unit will function properly this way but will not retain the channel memory. When power is applied your radio will come up on channel 9."

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1 Answer

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Let me know the brand, model of the radio.

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