I think you'll find that the 2000 M900Sie is a millennium special with all the best bits they could find. evidenced in the sudden drop in spec of an S soon afterwards.
Darren, the cables are white/brown and black and the continuity is good all through. I can put the warning light on by bridging the two cables where the sender plugs in, just a bit mystified why the sender won't put the light on.
__________________
|