107 300 SL speed sensor/pulse/generator for sat nav

[David Pemberton]

Hello

Can a speed pulse generator be fitted to a 1987 300 SL (107041) so that an Audio 30 APS sat nav will work?

This summer I'm using my SL for a touring holiday and would like to swap out its classic Becker Grand Prix for the Audio 30 APS sat nav I had in my (now written off) C220CDI. I'm pretty sure it will need a speed input to work. I don't much fancy mucking about with the ABS to get a speed signal there - if indeed it's possible - can I add a Hall generator to the speedo? I assume that there was a speed signal generator for 107s that had a cruise control. The oft-quoted part 0075422917 seems to be for 124 generation cars. The usually trustry parts catalogue shows a part (item 315, third diagram) but has no part numbers.

Rest of the temporary swap seems straightforward: DIN to ISO harness converter; upgrade the speakers behind the grilles.

 

[television]

I have no details on the 107. On a 124 the speed sensor pulse is in the passenger kick panel in a small terminal block, the same wire went up to the existing radio's on to pin 1 of the multi connector the wire could be purple/green

 

[Bolide]

Have a look at the back of the speedo: the Hall effect sensor plugs in next to the speedo drive cable

Many of the aftermarket cruise control & satnav systems have a wiring loom to attach a speed pulse sensor to the prop. Blaupunkt do one and a bit of Googleing should find it

Of course you could buy the Becker Classic - that'd solve all you problems

Nick Froome
www.w124.co.uk