okay

i am in the process of swapping a s5 jdm tII into my 90 gxl. i already made the stupid mistake of using the japanese wiring harness, but when i try to hook up the ecu, 2 plugs from the engine wiring harness fit, but the one plug that hooks up from the interior doesn't fit? whats going on? is there any one else who has done this swap and can give me any poiners? thanks alot\

 

what number is the ecu?

 

im not sure, how do you know?

 

look at the ecu, it has a big sticker like n370, or n326 or something