thanks for the info and the methods for fooling the system into thinking it is still there. will try to connect up with both switch and ecu in position using a relay. hope the resistance of the coil in the relay will fool system, failing that will use your suggestions. at least now i know the reason...

This is my first post and hope someone can help. Am swapping a d16a6 engine in my kit car for a d16z6 engine i obtained from a 1992 del sol. i am gradually working way through the wiring to the ecu and am confused by the connector at A12 FANC. was tempted to ignore this wire and tape it up as my rad...