ok heres the scoop i bought a 99 si b16 and the motors in and all the pedals and the cyls are in the shift linkage is all bolted in now heres the problem i put the si harness on the engine and ran it into the pass side im missing the C connector into the p2t ecu i went back to the car and seen that the connestor im missing is on the dash harness on a 99-00 si. Can i use my 97 ex auto harness and just get a obd2a-obd2b harness? if so what wiring would i need to do? or can i use the si harness if so someone please tell me how on earth i can go about doing that. also if anyone knows of any 99-00 si into 96-98 ex or auto to man swaps that actually tell you how to wire it nicely let me get a link please.