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91chevZ71
07-07-2007, 08:51 AM
7747 ecu (harness), 91 5.7 TBI

Anybody know off the top of their head which pin the NB O2 is on the harness?
I haven't been able to find a 7747 pinout? with the search feature yet
THanks
HaulnA$$
07-07-2007, 10:30 AM
7747 ecu (harness), 91 5.7 TBI

Anybody know off the top of their head which pin the NB O2 is on the harness?
I haven't been able to find a 7747 pinout? with the search feature yet
THanksThat would be pin D7, purple wire. Here is a link to some '7747 pinouts. ftp://ftp.diy-efi.org/pub/gmecm/manuals/1227747/ . HTH
91chevZ71
07-07-2007, 10:39 AM
RIGHT ON

THanks HAulin

gonna bookmark that page. sweet