GPS speedo signal

[Zedbedee]

I'm about to try and fit a Blaupunkt Rome stereo/satnav to my 2000 Z3. It needs a 'speedo signal' has anyone done this before as I'm not sure of the best way to get this. I was wondering if there is a redundant loom for cruise control where I could find a speed signal. Any ideas please?

[pingu]

A speed signal comes from the speed sensor on the diff and goes into the back of the instrument cluster.

See p.199 of this...

http://www.porterbility.co.uk/Files/PDF/e36z3_99.pdf

I've used the 1999 version of the wiring diagram because your profile doesn't show the production year.

[Zedbedee]

Thanks for that. My production date is Nov 1999, don't know how much the wiring may have changed, probably not much.

[deni2s]

I used some wire near steering wheel rack, probably it was white/black (not sure about the color now), but it worked well. I think it was from speedo or onboard computer. If you don't have onboard computer, you should have the wiring for it anyway.

[deni2s]

Wiring diagram for your car: http://www.hc.lv/inc/Upload/news_290/File/e36z3_00.pdf

[pingu]

Wiring diagram for your car: http://www.hc.lv/inc/Upload/news_290/File/e36z3_00.pdf

Page 204

[Zedbedee]

Many thanks for taking the trouble to respond, it is much appreciated.