Ins and Outs-
Red Yellow Blue
See also BobInCalifornia's
Home Made iPod interface
and output wiring:
Ken Belliveau writes:
I'm going to be putting my TP into a 1998 328i. I've already
replaced all of the stock audio components with upgraded after market
stuff in my car. I just found the prospects
of an in-dash CD player with stock lighting and the navigation to be
too tempting to turn away. Here's the low down on the RCA input and
output wiring issues:
If you look at the BMW harness that came with the TP, specifically at
the end that plugs into the back of the TP, you'll see that there is
a 2 part black connector and a red connector. The
red connector is the one that contains
all of the wiring and places for wiring for the outputs, telephone feature,
and the CD Changer/auxiliary input.
(Chamber C1)= OUTPUT (amp)
(Chamber C3)= INPUT and/or phone (phone doesn't count as INPUT)
+ Blue + BMW IBUS
There is only one INPUT possible, must choose either
CD Changer or other AUX Input (e.g. iPod, satellite radio, Phatbox).
4771 can only use the BMW IBUS CD changer.
Ken Belliveau writes:
I'll be connecting the TP to an aftermarket amp rather than the stock
BMW amp, so I want to plug in the wires to the back of the TP that would
terminate into 2 pairs of RCA- type outputs.
The same is true for input into
the TP, I want to plug in the appropriate wires that would terminate
in one pair of RCA type connectors.
For Output Becker has an additional output
harness that terminates in a yellow connector
on one end and RCA connectors on the other, this harness is for wiring
up RCA outputs so you can connect to an after market amp.
For Input wiring can be purchased in a
separate harness which has a blue connector
on one end and RCA inputs on the other:
You can either plug the yellow
connector and/or blue connector into the TP or you can transfer the
wires from the yellow and/or blue connector(s) to the red connector
by using a an appropriate removal tool.
June 26, 2007 update- there are now a variety of ready-made
input cables with the blue connectors.
can't plug both the red connector and the yellow or blue connectors
into the TP at the same time (unless
you cut the red connector like Al did).
Or give up the CD changer (and
BMW-specific controls) and do not use the red connector- just
plug in the yellow connector for the outputs and the blue connector
for the input. The advantage of using the yellow and blue instead of
the red is that if you change you're mind at some point and want the
CD changer you'd easily change connectors on the back of the TP. (Z3s
only have the CD Changer to consider, we don't have the other BMW electronics.
Also note the yellow cable for the 4771 is not the same as the yellow
cable for the 4773.)
In my case, I decided to put all of the wiring into the red connector
to simplify things in my dash board and reduce the number of connector
plugs in there. Over the weekend I transferred all of the wires for
the pre-amp outputs in the small yellow plug to the appropriate locations
in the C1 (output) portion of the red plug (and
thereby preserved the BMW electronics).
In case you need to see the placement of the pins on the BMW end of
the cable, here is Ron Stygar's 4773 pinout detail:
Pins 4 and 10 are missing from the BMW connector
Traffic Pro DIY Owner Install Instructions