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Connecting ipod to stock bose stereo for gmc

Im having a problem finding which wires are the ones to disconnect to connect my rca jacks to the back of my radio on my gmc. my manual does not give me a picture of the wires behind my stereo and telling me what they are for i just want to connect my ipod to my stereo

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Re: connecting ipod to stock bose stereo for gmc

You can find a vehicle wiring database on this site; You have to register to view them, but its free. FYI, if you are just adding RCA jacks, you will need to amplify the signal from your ipod as the "line out" would not be enough to hear very loud on a stock stereo. Best of Luck.

Posted on Sep 20, 2007

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I need to know what colers go where on the mic pin for a trc 447 thank you

I don't know which mic you're trying to wire to this radio. The colors of the wires in the mic cable may change from one mic to another, so relying on the color is not reliable. Usually you refer to these connections as Pin1 to a Signal or Function; or Jack Pin1 to Plug Pin3. No one assumes a color will always be used to connect Pin1 to TX (transmit).

With that said, I found an answer on FixYa from someone that answered the question some time ago like this:


4.)CH.Down / Shorted to Ground
6.)Ch.Up / Shorted to Pin 4

Be extremely careful when wiring this radio! pin 4 and pin 6 carry voltage shorting these to the wrong place can result in serious damage to your radio.

Lastly, since I doubt what was provided above is going to help you very much - you can review all the info ever printed by Realistic on your radio, here. There's a wealth of info on this page and you should be able to find what you're looking for in it. You're looking to find the pinouts of the radio to the pinouts of the mic.

If you ever have to disconnect a multiconductor cable from a connector, and you don't have the time or means to write the colors down, it is better to simply cut the cable - leaving all the colored insulation of wire ends soldered / still secured to the connector. When you are ready to do the replacement of the connector or cable, you've got the wiring order in place still, and can make the new connections one at a time at your leisure.

Good luck!

Aug 11, 2010 | Radio Shack TRC-447 CB Radio

1 Answer


Does the roger beep come with instructions? It can vary between beep boards.

Typically it gets installed inline with the mic jack.

There is a wire or pin on the board where the tx wire, and the rx wires go.These wires get disconnected from the mic jack, then a wire goes to the tx pin. Then there is an audio wire that gets connected to the audio wire of the mic jack. Then the black wire to ground, and the red wire to switched 12v right off the power switch.

Here is a schematic of the board connected to the mic jack so you know what pin is what.

Again, I would need to know what roger beep board you would like to install.

Feb 22, 2010 | Galaxy Radios DX-33HML 40-Channels Base CB...

1 Answer

My Cobra 29 LTD sometimes does not work even though the lights remain on. In other words I can't talk on it or hear anyone even though it appears to be operational

Your mic or mic jack is faulty. Try a different mic. In cobra 29's and some other variants, when you disconnect the mic, the audio is disabled. It will still receive, and transmit(possibly) but you will hear nothing from the radio.

It could be,
  • Broken wire on the back of the mic jack in the radio.
  • Broken wire in the mic cord.
  • Disconnected wires in the mic for the switch.
  • Dirty mic connection pins.
Most likely the problem is with the mic, and not the radio.

Oct 21, 2009 | Cobra 29 LTD CB Radio

1 Answer

Squeal when motor home running and mike is thumbed

You are getting engine interference from the electronics in the ignition system. First you need to see where its coming in from, The antenna or the power wire.

Turn on the vehicle, and the radio. Then while you hear the noise interference disconnect the antenna.(Do not key the radio) If the noise disappears when you disconnect the antenna, then the noise is coming in from the antenna. Relocating of the antenna may be necessary and or you have bad coax and it may need replacing. If the noise is still there when you take the antenna wire off, then the noise is coming in through the power wire. (this is most likely.)

There should be a setting called ANL (automatic noise limiter, or DSC. Turn this on. That should get rid of it, or make it not so present. If there is still a lot of engine noise then.........

There are only 2 ways around this.

1) Run the power from the radio directly to the battery. This will solve the problem.

If you cannot run the wires to the battery, then you can do the following.

2) Get a ground loop isolator for the power wire. Make sure its not one for the RCA jacks for an audio amplifier. Its made for the power wires. This hooks to where you have the radio connected to now, and then the radio hooks to it.

You can get them from radio shack, but usually they are not in stock and you will have to order it.

You can also check to make sure you have a good ground.

Oct 15, 2009 | Uniden PRO510XL 40-Channels Base CB Radio

2 Answers

No audio out of the radio's speaker or external speaker jack, but has audio from the PA jack.

The problem could be a range of things. Generally these radios use the same amplifier for the PA and receiver output. If the radio is receiving (usually the needle on the meter moves) then it may be bad contacts on the relay. Before pulling it apart check that the squelch setting is set to low and the RF gain is high. Check that the external speaker jack is not damaged (internally). If all seems OK visually try to connect one wire from a speaker (8 ohms) to the chasis of the radio and then use the other wire to probe different wires that are connected to the external speaker jack and on board speaker to see if you get an output there.

Sep 07, 2009 | Cobra 25 LTD 40-Channels Base CB Radio

1 Answer

Sound coming through my speakers

That is normal especially with stereo's without alot of filtering,but there are a few things you can do to try to alleviate some of it ; move your c.b. as far away as you can like maybe mount it on the transmission hump.Don't have the positives connected directly to the battery.Don't have your antenna close to the speakers,and while were talking antennas make sure your swr is low.If none of this helps think of it this way some people pay big $$ to have talkback in their radio you have it for free also though this is probably more important MAKE SURE all your wire connections are good ( no frayed wires ) . Good luck Dan

Jun 25, 2009 | CB Radios

2 Answers

When I transmit it feeds through my stereo

if you are using a kicker (amplifier) alot of times they will cause it make sure your wires dont cross any of your radio wires under the dash
you can buy noise filters for stereos they are generally used for car amps but i have heard of people using them because of cbs too

May 02, 2009 | Connex 3300 240-Channels Base CB Radio

1 Answer

2 Inputs on one FM Modulator?

Hello rn10997,

Yes there are 2 input RF Modulators on the market, they even have the plans to build your own. Now here is the problem this constitutes a remote mic which the FCC has deemed illegal. I know you don't want to hera this and will probably rate me low for saying so, but I would rather be rated low that to not first warn you about what you intend to do. That being said here is how it can be done.

From the audio out of your ipod or iTunes device go into one of the audio jacks of your modulator, then connect the other audio input to the CB speaker out this will will allow your to use the modulator to switch between the CB and the iTunes device.

Now for a system containing only one audio input. You can build a pre modulator audio switch which will allow you to switch between the iTunes device and the CB while switching the other connection to normal functionality. If you look on the Internet they have diagrams of such things. If you can not build this yourself you may be able to find an electronics technician to do this for you for a fee.

Take into mind that remote mic'ing is illegal

I hope this helps,

Thank you,


Mar 22, 2009 | Cobra CB Radios

2 Answers

Want to disconnect the bleep altogether on my cobra 148 gtldx

If this is a stock cobra 148 gtl 40 channel am plus side band, they don't to my knowledge come with a built in r beep. Some roger beeps are instaleed through the transmit circuit on the mic, so if not in the know Don't try to fix it.Some microphones have a beep built in. I used to install beeps on these radios using the pa/cb switch to turn them on. also try the nb switch or the swr/rf switch.

Feb 04, 2009 | Cobra 148 GTL 120-Channels Base CB Radio

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