I want to make obd2 to obd1 conversion harnesses for most honda ecu's and i'll sell them cheap to all you honda-tech people but i need schematics and a good source for the plugs, could any one here help me out????

 

i do that sometimes for swaps i do.I usually use the stock ecu and just remove the connector from the pc board and junk the rest of the ecu.the obd1 plugs i get from a junkyard for about 50 bucks usually.