i bought a 90 da im fixing it up right now its boosted and im getting a check engine light thrown so i went to read the codes and with the hondata s100 ecu it does not flash the red light on the ecu and it has a harness conversion for obd0 to obd1 but i decided to look for theplug to jump with a paperclip but it didnt work or really look like the plug you would use in the 92-93 with the brown and black wire so i the question is is there another way to do it for a 90?