so looking at the service manual the injectors are one driver on a 7730 i'm running code59 i've been having weird idle issues. the injectors get 12v at key on and the green and blue wires are the ground signal from the ecm but those are tied to the D6 ground ? seems i had a poor connection with D6 and the driver side injectors stop firing... which is strange to me.

 

D6 & d7 are injector grounds.