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Old 01-19-2005, 11:31 PM   #1 (permalink)
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[attachmentid=17424]I've got an FM-controlled CD changer, but I can't get any signal out of my head unit.

There is power going to the changer, I can hear it change CD's, but no signal

Attached is a pic of the modulator box. I think everything is hooked up right. I have the plug going into the head unit for the antenna.

Then, the black plug that is cut is spliced into the factory antenna wire. However, there are two wires within this wire: a thick copper stranded wire (maybe 16awg) and then a tiny little one insulated in plastic in the inside. It appears that all I need to connect are the skinny ones - what is the role of the thick wire?

Any ideas on getting signal? I've tried both stations - nothing but static. Thanks for the help guys.

-jkh
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Old 01-19-2005, 11:50 PM   #2 (permalink)
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i would recommend you to first fix the tip of the black round wire, the antenna wire, the center wire and the little ones on the outside are both inportant. go to radioshack and you should eaily find this tip, also on radio shak, or best buy, look for an apdator that changes the tip of the car fm antenna plug to the system the cd receiver uses, it is the work thing to cut the wires, your letting humiity, static to enter.,

also the little metal box has to be plugged on the cd changer wire, this is the wire that goes from the metal box, back to the cd changer on the trunk, this is the communication wire..

then you also must plug in the red, blck and yellow.

the red should go on to the red on the battery strait.
black strait to the negative.
and the yellow is the one that swicthes the unit on.off

if you are still using the bmw haed unit, there is a wire on the radio plug that is known as a remote power, this wire carries +12v only when the radio is on to power up the amp and the antenny diversity filter.
so in case you want the cd player system to be turn off and on by the radio hook the yellow wire to this remote wire trough the use of a relay. i once did the same set up on a 525 i, and after a while the amp would not work, that is because the cd pulls some power.. so using s simple relay guarantees that the cd changer will come on and off with the head unit and not interfere with the amp and the antenna diversity,

a link for a detail radio wiring, so you can find the remote out is on the link as follow
http://www.unofficialbmw.com/e36/stereo/e3...reo_wiring.html

in case you dont want to go to that hassle, be simple, put the yellow together with the red, on the positve of the battery. This way the cd player will always be on, you have to turn it off.

if need something else, let me know.
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Old 01-19-2005, 11:59 PM   #3 (permalink)
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Old 01-20-2005, 01:08 AM   #4 (permalink)
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hey thanks so much for the help.

I have the antenna adapter to connect to the (JCV) head unit, I have it off in this picture.

I am planning on soldering the cut antenna wire to the factory antenna wire.

Also, the red, black and yellow wires have been tapped into the correct wires - and the communication cord that runs to the changer is also plugged in, as the cord for the wired-remote control.

So, to me it seems like everything is hooked up, and I can scroll through discs and tracks etc.

But i just don't get any sound, just static on either station that I set the modulator too.

thanks a lot for taking the time to write.

jkh

------------


Quote:
Originally posted by victorgallas@Jan 19 2005, 10:50 PM
i would recommend you to first fix the tip of the black round wire, the antenna wire, the center wire and the little ones on the outside are both inportant. go to radioshack and you should eaily find this tip, also on radio shak, or best buy, look for an apdator that changes the tip of the car fm antenna plug to the system the cd receiver uses, it is the work thing to cut the wires, your letting humiity, static to enter.,

also the little metal box has to be plugged on the cd changer wire, this is the wire that goes from the metal box, back to the cd changer on the trunk, this is the communication wire..

then you also must plug in the red, blck and yellow.

the red should go on to the red on the battery strait.
black strait to the negative.
and the yellow is the one that swicthes the unit on.off

if you are still using the bmw haed unit, there is a wire on the radio plug that is known as a remote power, this wire carries +12v only when the radio is on to power up the amp and the antenny diversity filter.
so in case you want the cd player system to be turn off and on by the radio hook the yellow wire to this remote wire trough the use of a relay. i once did the same set up on a 525 i, and after a while the amp would not work, that is because the cd pulls some power.. so using s simple relay guarantees that the cd changer will come on and off with the head unit and not interfere with the amp and the antenna diversity,

a link for a detail radio wiring, so you can find the remote out is on the link as follow
http://www.unofficialbmw.com/e36/stereo/e3...reo_wiring.html

in case you dont want to go to that hassle, be simple, put the yellow together with the red, on the positve of the battery. This way the cd player will always be on, you have to turn it off.

if need something else, let me know.
[snapback]275391[/snapback]
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Old 01-20-2005, 08:07 AM   #5 (permalink)
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Not a problem helping./.

if you want to sotter the wire tha is ok, but i would still put the plug on the wire and then just plug then in

also, the way this works is that you have the fm antenna from the car goes into the metal box, and from the box there is another one that goes on the rear of the radio.. make sure they are being plug the right order..

also look the metal box, where you selec the station to tune into it, that if the swicth is all the way to the side you are selecting, sometimes the swicth has some bad contact.

then check to see if the metal box is receiving +12v on the red wire and the yellow and it has a good ground

if nothing works, try using another box,

but let me ask you someting.. did you check the back of the changer to see wheter there are rca audio outputs.. on the a panasonic unit i installed, not only there was a communition wire, you also had to run the sound wires, wich are the rca ones, you know the round ones with white and red color tips, depending on the unit you have to run them from the player back to the metal box.
normally the communitcation wire only carries power and cd player control functions.. the sound is kept to an external wire in order to avoid power interference. chack that too/

also
when i installed a panasonic unit, the metal box was receiving power, but where i hook the power from, could not provide enought current, so althoug the cd player changed csd and all, no sound. that is why i mentioned the relay, after putting the relay in the system works beautifully..

well let me know, and if you need send more pics about it.

have a good one.
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