If you want to build essentially a stand alone engine harness the easiest way I've found is by running a 96-00 civic ex harness with a obd1 jumper harness. Basically it gets rid of the shock tower plugs besides one which is mostly ecu power, ground and the fat wire for the starter solenoid. I wired up my crx all motor drag car this way and it was very easy. I'll be doing the same harness setup on my insight when I single cam swap it. The ecu plugins go straight into the cabin and the green plug is for the cluster if I remember right.