Date: Sun, 16 Aug 1998 12:38:22 -0400
From: Jim Cash <j.cash_at_sympatico.ca>
Subject: Re: E39 wiring
Bruce Mitchell writes:
> I'm trying to help someone install a V1 into a '98 540i. I usually tap
> into the sunroof's switched hot line but the E39's color codes are quite
> different than my E36. Can anyone experienced with the E39 tell me
> which wires to tap into?
I would not recommend using the sunroof wiring - there is some software
control of the sunroof operation, and you don't want to risk
Instead I use the power lead that is for the optional "universal
transmitter" (garage door opener) that also gets mounted in that upper
The wiring for it should already be there - small 2 wire connector
(green/white & brown wires). Green/white wires always have power with
the ignition. There is a separate fuse for this circuit - in fuse panel
above the glove compartment.
Hope that helps.
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London, Ontario, Canada
BMW CCA 102929
E39 97 540iA