RE: injector and service light issue
 

If your signal wire is 7v from a 5v reference, you either read your meter wrong or you have a voltage feedback from the ECM. If you read your meter right, then either the ECM is bad or there is a short to B+ (Battery) on the signal wire to the ECM. Do you have a good voltage sweep by moving throttle and watching signal voltage? My bet is you have a bad ECM if your voltage readings are right with engine idleing. [8D]