hey guys, i am new here and looking for some info. i am a ford fan and am a big member with powerstroke nation. mustangs are new to me but learning fast. what i have is a 88 gt. i put a 89 harnes and a9l ecm in it, i have power to the coil and the fuel pump works fine, i have pressure at the test port but i dont think i have power to the injectors? the ground is hooked to the head from the injector harness. from what ive read 87 thru 89 have the same under dash harness and putting this ecm harness in is plug and play? any ideas or thoughts? thanks in advance..