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Old 02-28-2005, 05:14 PM   #1 (permalink)
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Ok, I was insalling a clarion headunit on my gf's bmw 1996 328is. I'm new to bmws and could not find the battery cable so I was careful with the wires, well, at one point my gf crossed two of the wires on the harness coming from the car (not connected to cd player) well, when I finally got the whole thing wired, I plugged the harness in and everything worked well EXCEPT when the cd player was on it did not have any sound, but when the am/fm was on, there was perfect sound. Then, as I was messing around with the other wires, the ground and yellow power wire crossed again, Now the headunit will not even turn on. I know i'm stupid for not disconnecting the battery but what happened? How can I fix it, also how do I unhook the battery.
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Old 02-28-2005, 05:59 PM   #2 (permalink)
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will the car start? did you cut the old harness off? or did you buy the plug+play adapter? check the fuses?
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Old 02-28-2005, 06:15 PM   #3 (permalink)
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Originally posted by chowder@Feb 28 2005, 05:59 PM
will the car start? did you cut the old harness off? or did you buy the plug+play adapter? check the fuses?
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ok, update, I replaced the radio fuses and now the unit turns on again and plays am/fm just fine, but on cd/mp3 it plays fine but I hear no sound. What could it be? Could any other fuses be blown?
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Old 02-28-2005, 07:14 PM   #4 (permalink)
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bmw e36 wiring diagram


double check your wiring and make sure all wires are connected well. i just installed a new deck for mine too, and i got similar problems. i couldn't get sound with the cd player, but difference is you can get sound with the am/fm. so the problem is slightly different. i would (if it still doesn't work) get a bench test done to see if the deck is good. have it done at a shop...could be bad deck?
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Old 02-28-2005, 07:23 PM   #5 (permalink)
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Originally posted by chowder@Feb 28 2005, 07:14 PM
bmw e36 wiring diagram


double check your wiring and make sure all wires are connected well. i just installed a new deck for mine too, and i got similar problems. i couldn't get sound with the cd player, but difference is you can get sound with the am/fm. so the problem is slightly different. i would (if it still doesn't work) get a bench test done to see if the deck is good. have it done at a shop...could be bad deck?
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twas a bad fuse and the blue/white wire was supposed to be connected instead of the blue wire, something to do with the factory amp. I feel stupid haha. ghead
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Old 02-28-2005, 09:38 PM   #6 (permalink)
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yeah what you did was not have the factory amplifier turned on all the time, hence no noise. The blue wire is a power antenna lead which is designed to raise/lower the factory power antenna and is only active when in AM/FM mode, and shuts down in CD, whereas the blu/wht wire is a power amplifier wire and tells the amplifier to turn on, regardless of source. Kenwood, Sony, and Clarion are the more popular ones that use the 2 blue wires instead of just one.

Now that you have an aftermarket headunit, junk the factory amp and speakers for new you cant go wrong there....
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Old 02-28-2005, 10:14 PM   #7 (permalink)
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Originally posted by da_bull@Feb 28 2005, 09:38 PM
yeah what you did was not have the factory amplifier turned on all the time, hence no noise. The blue wire is a power antenna lead which is designed to raise/lower the factory power antenna and is only active when in AM/FM mode, and shuts down in CD, whereas the blu/wht wire is a power amplifier wire and tells the amplifier to turn on, regardless of source. Kenwood, Sony, and Clarion are the more popular ones that use the 2 blue wires instead of just one.
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