chassis harness conversion

ok so my dilema is I’m converting my da9 obd0 to rhd. i have an obd0 rhd harness but it is cut up pretty good. i might be able to source another da6 rhd harness and it might be obd1. does anyone know if the harnesses are the same for the chassis and esp up under the dash? ecu is not an issue already running obd1 on my other obdo with rywire ecu conversion. any info on obdo to obd1 chassis harness would be much appreciated.