Gilly,trip computer retro-fit.....
 

Gill, l own a 99 ML430, which came with the trip computer...is it possible to up-grade to the newer ones that contain the compass feature, or is this a wiring nightmare....and if it is possible, would you be able to find out the part number required for this modification... Thanks Gilly...Carlos...

Wiring nightmare, the compass receiver is back in the rear hatch, I wouldn't try it.

Gilly

Thanks as always
 

Thanks for saving me the time and money....Gill...