Found an un-plugged plug in the engine bay.
 

http://i38.photobucket.com/albums/e1...9122007290.jpg
Should this be plugged in? i dont know where it came from i just noticed it when i was replacing the plugs and HT Leads.

that connection i believe is for the throttle sensor, which the s12 was never supplied with =D just a simply switch type which i can see connected.

So no, its fine:)

Yeah seen that before, I reckon its a kickdown switch for autos