comes out the bottom of the white connector for the engine harness anyone have a clue were it goes? Wire is a yellowish tan color with no tracer
if it is orange and traces back into the injector harness, that is the HEGO ground wire for the O2 sensor.
http://www.veryuseful.com/mustang/tech/engine/images/88-91_5.0_EEC_Wiring_Diagram.gif
That wire was that way on my '88 and was that way on the harness I grabbed from an '88 T-bird in a junkyard.
ok guys i connected it to the o2 ground