E38 Auto Dimming Mirror Retrofit - Need Some Elec. Help

[RobertK]

Just bought an auto dimming mirror that was pulled from a 1997 740iL. I'm determined to retrofit this to my E30 but I need some help identifying the wires.

If anyone out there has access to the info I would be forever greatful.

I need to know what each wire goes to. Here they are..

- Blue / Yellow
- Brown / Black (most likely ground)
- Red / Black
- Green / White
- Gray / Black / with Yellow dots (dashes?)

[RobertK]

Nobody?

[Erick]

I remember I looked into this a while back. I have the mirror somewhere although the one I got only had 3 wires. I found out what two wires were but couldn't figure out the 3rd. I'll look into it and follow up.

[RobertK]

Thank you sir.

Anyone else out there maybe have an E38 Bentley that could dig up a wire diagram?

[E30FTW]

Uh... installed one of these in my e30 years ago. Just checked my car, and the wires I have is solid brown (ground) and green /w red stripe (positive)

There is a third wire you can connect to the reverse light +, which cancels the dimming when in reverse. I haven't felt the need as my windows were too dark to see through at night anyways...

[e30frosh]

I'll check my e39 bently for you.

[sonnyqm3]

I believe there is a thread about swapping the dimmer/dome light from an 5 series into an e30.. If I find the thread I will copy and paste it..

found it and hope this helps..

http://r3vlimited.com/board/showthread.php?t=132248&highlight=e34+dome+light

[RobertK]

But I'm not swapping in a 5 series dome light.

Its a auto dimming rear view mirror from a 1997 740iL (E38).

[sonnyqm3]

But I'm not swapping in a 5 series dome light.

Its a auto dimming rear view mirror from a 1997 740iL (E38).

oh ok I just thought maybe that would help you.. good luck though.

[RobertK]

oh ok I just thought maybe that would help you.. good luck though.

I appreciate the gesture.

By chance does anyone know if a place that might have the wiring diagram for thing online?

[2002maniac]

Check the E34 section on bimmerforums. It's a popular upgrade for the 5ers

[blunttech]

I have one in my M2. super duper bobby cooper wired it for me. I pulled the wiring diagrams from BMW NA and gave them to him. I may have them in my garage. Mine came out of an e39 also.
Ill have a look later tonight and see if i can locate