Help - Radio wiring '89 535i (UK)

[Gungadan]

Can anyone help with this one? Recently bought the above car with an aftermarket head unit fitted and I'm suspicious of the wiring - sound is awful and switching the blower ON turns power to stereo OFF. Also the pre-set memory doesn't work and fade and balance are all out of whack. The car just has 6 speakers and I think they're the standard ones. Unfortunately I can't find a wiring diagram which matches what I appear to have in my car. I need to know which colour wire goes to which speaker. This is the situation at the moment:

FL
blue/brown +ve
blue/black -ve

FR
gray/black +ve
gray/white -ve

RL
green/black +ve
green/? -ve

RR
yellow/brown +ve
yellow/black -ve

Ground - yellow
Aerial - white
+ve - purple
12V - pale blue

These are the colours from the dash not from the radio - I assume they're the BMW ones but I've found a couple of links online to circuit diagrams and the colours don't match.

TIA

Dan

[Martin in Bellevue]

http://www.bmwe34.net/e34main/upgrade/stereo_wiring.htm

[Gungadan]

http://www.bmwe34.net/e34main/upgrade/stereo_wiring.htm
mmm yeah, I've seen it, thanks. But unless I'm being very thick, it's not the same as what I have. Differences between Euro and US maybe?

[cleansdabaffroom]

Ground - yellow
Aerial - white
+ve - purple
12V - pale blue (ignition)
12V - red ? constant power

the above should be right. I redid my wiring on my stereo last night -- 92 520i euro spec

[shogun]

If you are lucky someone lives near you and you have have a look.

the link (http://www.bmwland.co.uk/talker/portal.php)