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  #1  
Old 12-08-2008, 03:01 PM
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Bluetooth install problem - I-BUS loop-back

Hi guys,
I'm replacing my GSM with bluetooth. The problem is that I have some special TCU (LINK P/N 84116904906, the antena coax cable goes to TCU instead of the armrest phone) and can't figure out what is its I-BUS pin. I have checked it's DB25 PIN in the trunk and no cable are attached to pin no 22 or 6, where I was supposed to loop-back the I-BUS from 18 ELO adapter.
Also, my 18 ELO adapter under armrest has no cable attached to pin 6, where I were supposed to install the 9&6 jumper (I-BUS cable is present on pin 9).
Did anyone successfully upgraded from such TCU to bluetooth? If yes - to which pin no should I loop-back the I-BUS from pin no 9 in 18 ELO connector under armrest ?
Any tip or help would be REALLY appreciated...
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Old 12-08-2008, 06:49 PM
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Check with Martin at bimmernav.com - he should have the conversion cables you need to make this work.
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Old 12-08-2008, 07:11 PM
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Quote:
Originally Posted by UCrewX5
Check with Martin at bimmernav.com - he should have the conversion cables you need to make this work.
I did already. First posted there.
The problem is that I have a little different wiring. Can't loopback the I-BUS because of missing pin N.6, where I was supposed to loopback the I-BUS from pin N.9 with a jumper.(according to Martin's doc).
I hoped may be some of you did upgraded from a such wiring as me...
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Old 12-10-2008, 05:03 AM
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Hi Foxy,

Welcome to the forum,

You don't have to take the i-bus from the 26pin plug, you can take the i-bus feed from anywhere, you are just tapping into a closed network, so adding an extra i-bus device will be OK, the easiest place to take the i-bus from would be the CD changer (the 3 pin plug).

It's pinouts are; Clicky

1. Ground (Brown)
2. +12v Switched ignition (Green / Red)
3. I-Bus (White, Yellow)

Personally, I wouldn't bother with the TCU, go for a proper ULF, the wiring is much easier and it wont need dealer enabling (some TCU won't work unless they are coded).

Rip out the old phone system and replace with a new loom, trust me its a lot easier. I retrofitted BT in mine (from nothing) and it was fairly simple.

Clicky

HTH
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Old 12-10-2008, 05:31 AM
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Quote:
Originally Posted by ccfj1

You don't have to take the i-bus from the 26pin plug, you can take the i-bus feed from anywhere, you are just tapping into a closed network, so adding an extra i-bus device will be OK, the easiest place to take the i-bus from would be the CD changer (the 3 pin plug).
Thanks for the idea. I'll give it a try this weekend, when I'll find some free time.
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