Calling all bad boy electricians...

[Royalratch]

Anyone know how to get a speed signal/pulse upto my Sat Nav head unit?

Do I take a feed from the one that comes from the Rear Diff to the speedo?

Or take it from the Speedo end?

Do I even have one?

318iS.

Much appreciated...

[wells696]

i would take it off the wire fromt he diff case follow it up as it comes up inside the car

[tomtomiS]

doesnt ur headunit work out the speed via the gps logging like stand alone satnavs do?

[Royalratch]

The one in me iS does. I have another for the Touting that is more accurate with a speed reading. It's 1 DIN unit that fits in the dash - I don't do all that TomTom stuck to the screen ugly shit.

[Brianmoooore]

Cleaned up speed signal comes out of pin 1 of the green connector on the cluster (if fitted), pin 10 of the white connector (blue/yellow wire) and pin 26 of the yellow connector (brown/red wire).

[Royalratch]

Where do I find these wires Brian?

I know roughly where the speed signal is from reading about it but I don't actually know where.

Where would be the best place to attack to reach the head unit?

[Brianmoooore]

Where do I find these wires Brian?

On the back of the instrument cluster.

[tomtomiS]

lol at brianmooore! royalratch what unit are u using?

[Royalratch]

Thank you Brian.

Blaupunkt E1 and Freestyler.

Bit primitive and slow but they work and look awesome in the dash with red lights that match the E30 dash - and they're very understated.

Blaupunkt also made the original units for the car which is a nice touch.

To be honest, I bought them because they had the most inoffensive faces out there. I would love some higher-end gear but they're all so vile I could NEVER put them in my ride...

[Ziggy]

Get a becker - they also look like they're supposed to be there rather than on Blackpool seafront!

Was gonna get round to asking the same question about the speed signal too - ta