iam going to be swapping a b16a2 in my 93 civic cx hatch iam going to be using the cx wiring harness. for the crankshaft sensor sine i can't use one from a 01 ITR because it's a OBD-2 plug, does anybody know which crankshaft angle sensor i can use. (maybe from a 94 Integra GSR_

 

use an obd2 engine harnes from a gsr/itr.
spend the 100 bucks on it it will save you the time from changing everything over to obd1 since it all plugs up.
the one wire you will have to jump is for the the tach and that comes right of the dist.

 

iam trying to use my cx harness. and why do i have to run for the tach wire

 

you dont need to run crank angle sensor if you will be running obd1 ecu. Like the other post said use obd2 wiring harness and obd1 ecu and you'll be fine.