Hi,

What is EGR/oxygen sensor? I am watching "EGR/oxygen sensor mileage
counter box" on the spare tire side now. "EGR/oxygen sensor" cable runs
from this box to dashboards. Colors.. Black, Yellow, and LightGreen.
Will I be able to pick up "Speedo puls" from these lines? or no?
I install GPS/Navi Systems to Westy now.

It is described to Bentley (90.15).

Thanks,

Yoshi