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PCM 2.0 to 2.1 Upgrade

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Old 05-05-2017, 07:18 AM
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gordan
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Default PCM 2.0 to 2.1 Upgrade

I Am looking to do this, and have acquired a PCM 2.1 head unit and the map DVD drive.

From what I understand, the two additional things I need are:
1) Wiring loom between PCM 2.1 head unit and the DVD drive
2) (possibly) replacement GPS antenna cable that now goes to DVD drive instead of the head unit
3) (possibly) an aftermarket power feed adapter for the DVD drive

Does anyone have the porsche part numbers for 1) and 2), and any details on exact requirements for 3), possibly with a wiring diagram to go with it?

I took the car to a local independent Porsche specialist but they are reluctant to take on the job, so it looks like I'll have to attach this project myself. Any input from anyone who has performed this upgrade would be most appreciated.

TIA
Old 05-05-2017, 09:43 PM
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touareg
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Old 05-06-2017, 06:05 AM
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gordan
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Originally Posted by touareg
Thanks for the info, most appreciated. I have ordered 95564721901 from a local supplier (I'm in UK, so ordering from Florida would be impractical).

I don't suppose you could tell me where I can get the parts lists/diagrams that this snapshot is from? Is that sort of thing available to buy, or is it only available to Porsche affiliates?
Old 05-06-2017, 11:16 AM
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touareg
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http://www.porsche.com/all/media/pdf...PA_KATALOG.pdf

For the power feed, it is most likely part of an original wire harness, that is implemented when the car is built (to save costs cars are now days only built with a wire harness they need).

I don't think it would be practical to replace your harness with that one, so I would try to source the plug, and pull power off another high amp circuit, like the power seat motor and fuse it. The correct way would be to run back to the fuse box on the side the box is under the carpet and up the A pillar.

I would start by looking at wiring diagrams (there is a 100+ page doc) and find out where it actually connects if you want to do the correct thing.
Old 05-06-2017, 12:11 PM
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gordan
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Originally Posted by touareg
http://www.porsche.com/all/media/pdf...PA_KATALOG.pdf

For the power feed, it is most likely part of an original wire harness, that is implemented when the car is built (to save costs cars are now days only built with a wire harness they need).

I don't think it would be practical to replace your harness with that one, so I would try to source the plug, and pull power off another high amp circuit, like the power seat motor and fuse it. The correct way would be to run back to the fuse box on the side the box is under the carpet and up the A pillar.

I would start by looking at wiring diagrams (there is a 100+ page doc) and find out where it actually connects if you want to do the correct thing.
Thanks for the link, that's really useful.

I believe the power feed is what was referenced in this thread:
https://www.renntech.org/forums/topi...-cd-based-pcm/
and that says the cable with the same plugs is used for the satellite radio add-on, so that should be spliceable (might not even need it, my DVD drive came with the plugs still in the back the a few inches of the wiring loom still attached).

I don't suppose you have a link to that 100+ page wiring diagram document handy?

Thanks for all the info so far, really appreciate it.



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