Hello,

I did a tpi conversion on a 1986 Monte carlo SS. I have a 1987 MAF 5.7 camaro engine. We never ran a serial data wire from the ecm to the obd1 connector. So basically i can't get any data on a scan tool. The only thing i can do is get codes to flash on the SES light. I know that I can unbolt the obd1 connector and pull it down. Now how do I wire the Serial data wire into that connector. I think i'm going to have to seperate the connector and find the right pins. Does anyone know a part #? are these pins removable so I can connect a new wire to them?

 

You can simply run the data line from the ECM to the diagnostic port. The data line is spliced into so that the same circuit goes to cavity E and cavity M in the diagnostic port. We carry new terminals (pins) for the diagnostic port.