Tip & How-To about Car Audio & Video

No sound when changing radios

Most of your new cars all use some type of factory amps. When you change the factory radio to a new one you will have to hook up the turn on wire for the factory amp to work.

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I connected the bmw harness to a new new eonon radio,.There is power but no volume. whats the problem?.


In that vehicle there is a factory amp. It will power up with the White wire in the factory harness. Hook the amp out wire from the aftermarket unit to this white wire. It also controls your antenna.

Aug 22, 2010 | BMW 02+ 3 5 X5 M3 Series Car Radio Wiring...

1 Answer

were do i plug in the RCA cables from the amp to a factory radio? do i need any sort of adapters if my stereo dose not have inn or outputs? and where do i hook up the remote from the amp?


Most factory radios do not have RCA outs, but most will have a remote wire. Usually used for a power antenna option. Your remote wire from the amp could be hooked to the power antenna wire on the factory radio and it would work great for turning on the amp. As for the RCA inputs on your amp, you will not be able to use them without RCA outs on your factory deck. Although most amps offer a high level input alternative and will use the standard speaker level out on your factory deck. This means the rear channel speaker wires from your factory deck will be used to feed the signal to the amp. You will have to check the instructions and manufactorer recomendations for the amp you are trying to hook up. Have fun and good luck!

Mar 09, 2010 | Stingpro ST444 1850 Watts Complete...

1 Answer

HELP


First we need to eliminate some possible install errors,
1.) is the deck turning on.... if not check to be sure power wires are hooked up correctly ,..... if deck is turning on and speaker wires are hooked up properly, this problem is usually caused by not hooking up the power wire to the factory amp, I'm not sure what color the wire is as they are different with many types of cars, as soon as you locate the wire hook that wire to your ignition wire to your raido usually the red wire coming out of the back of the deck.... when you are finished you should have your ignition power wire feeding power to the radio and the factory amp

Jun 29, 2008 | 1998 Chevrolet Malibu

2 Answers

remote wire to factory radio


If you have an electric aerial, you can tap into the wire to it. Usually a thinnish blue or orange wire. The electric aerial should have 2 or 3 wires going into it (depends on if the body connection is used for ground or seperate wire is used). The sense/control wire will typically be the smallest wire. It should change polarity when the radio is switched from off to on.

Nov 20, 2007 | Sony Xplod XM-1652Z Car Audio Amplifier

1 Answer

no sound to the in car speakers from my alpine cda-9827 cd player


What kind of car did you install this in? Did it have a factory radio in it? If I had to take a guess I would think that there is a factory amp that you may have hooked the blue wire from the alpine deck to. If this is the case when you switch to CD the alpine deck turns off the power to the power antenna lead(blue wire) and thus your factory amp. If this is the case hook the factory amp turn on to the blue and white wire and you should be good to go.

Sep 02, 2007 | Alpine CDA-9827 CD Player

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