to go from obd2 to obd1 you need an obd1 ecu. i don't know who chips obd2 ecu's.

but get obd1 ecu, and get the plugs that go into the ecu. run the wires from the old harnass in to the new one. just get a map of which wire goes where....

i don't think it does ****.

wouldn't worry about it, but that's just me.