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Ok i am putting in a alpine head unit in a 99 neon i can get it to hold the memroy i have to put the red and yellow wire together and do the same on the wiring bracket and when i put all for together the radio comes on but in i cut the car off and cut it back on i have to reset the radio sations all over again

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The yellow wire must be connected to a constant voltage source. You have the red and yellow connected to a voltage source that only gets power when the car is turned on. The yellow wire is for the memory. Check the fuse box for a fuse that has voltage on it when the car is off and the key is not even in the ignition. That is the type of connection the yellow wire needs. The red wire can stay connected to the place it is at now.

Are you using a harness that is made for installing a radio into a 99 neon? They sell them at most all places that sell car stereos. Go in and ask for an installation harness for your car and then you connect it to the harness that comes with your radio by matching the colors of the wires and you have a nice and easy install. It plugs right into the factory harness with all the connections you need.

Posted on Jun 17, 2008

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I'm trying to install an older model alpine cd player in my boat. When I attached the red wire without attaching the yellow wire I don't get power to the unit, when I attached the red and yellow...


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Hi Terry

I know you say the yellow wire is the constant live but on some cars you have to wire the red and yellow as one, what make is the car?

Regards
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Feb 14, 2010 | Car Audio & Video

1 Answer

Trying to set the radio stations on Alpine stereo


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I hav a 95 berrta and im tying to put a head unit


Hello chrisuftring,

Here's a link to the wiring color code for the '95 Chevy Beretta.

You'll need to match the function of each wire from your head unit and the color code for that would be in your manual. Most aftermarket units are somewhat standard as far as power, accessory, ground, and speaker connections are concerned. But the wiring colors may be different for such leads as remote, power antenna, illumination, dimmer, and muting.

An Alpine head unit has the following wiring colors:
Blue - Power Antenna
Blue/White - Remote
Pink/Black - Audio Interrupt (muting)
Orange - Illumination
Red- Switched 12V+
Yellow - Constant 12V+
Black - Ground
Gray - RF Speaker (+)
Gray/Black - RF Speaker (-)
White - LF Speaker (+)
White/Black LF Speaker (-)
Violet - RR Speaker (+)
Violet/Black RR Speaker (-)
Green - LR Speaker (+)
Green/Black - LR Speaker (-)

With this head unit, you would wire Yellow to Orange, Red to Yellow, Black to Black, Orange to Gray, Blue to Pink, Gray to Light Green, Gray/Black to Dark Green, White to Tan, White/Black to Gray, Violet to Dark Blue, Violet/Black to Light Blue, Green to Brown, and Green/Black to Yellow.

Note that there are 2 "yellow" wires in your vehicle color code. You'll have to test them to determine which one is the accessory wire and which one goes to the left rear speaker. Using a 12V "test light" is the simplest. Connect one side of the light to ground. With the ignition ON probe the yellow wires. One of them should light the tester, the other one won't. Verify that the light goes out when the ignition is OFF and your have separated the redundant "yellows". The one that lit the tester is your 12V+ switched wire and the other one goes to the left rear speaker.

Hope this helps.

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