discoinferno218
New member
Alright guys, quick question for you. I am in the process of putting a 3rd gen 3sgte into my 89 Corolla Wagon. The harness I have is cut in a couple places. One cut is right by the ignition coil and the other cut is going to where the fuse box would be, I believe. I was wondering if a wiring harness from the MR2 with the same engine would work for my application. Is everything on the engine and tranny the same? Is the ECU pin layout the same? I have my ST205 ECU so I was just gonna use that. Since I can't find an English translated ST205 wiring diagram I was thinking I could still piece it together by separating the engine and rest of the electrical and merging the two but as it is incomplete that would make it even more challenging.