Wiring Harness Conversions for Honda & Acura Engine Swaps Note: Standard harness does not include VTEC wiring so if you are going to be wiring in VTEC your self or not using a VTEC motor select standard harness conversion. If you are running a VTEC engine & would like for us to add a VTEC sub-harness for you that can be done at an additional cost by selecting swap type below. Hondaswap Wiring Harness | Wiring Diagram - Obd2 Wiring The information and suggestions that have been elaborated above ought to be a fantastic kick start, though. Obd2 Wiring Diagram. Hondaswap Wiring Harness | Wiring Diagram – Obd2 Wiring Diagram Uploaded by Bismillah on Saturday, February 9th, 2019 in category Uncategorized.