you might be able to use parts of the harness, but you'll certianly need a "jumper" harness.

search for obd1 wiring swaps maybe?

I realize the engine is obd2, but you will be better off with an obd1 ecu.

but running a y8 with obd1 can be quite a trick, since base timing is 12* rather than 16* like most other hondas. It should be a fun swap though