i am making my research for a ls swap i wanted to know if the wire harness of my crx plug and play with a 90-93 ls harness

 

90-91.....92-93 is obd1 and your car is obd0

 

You don't need a new harness EF si harness has all the plugs you need, exten them as needed, the only one i had to extend was the fan switch sensor but thats because i was using a B18b and it located on the thermo housing instead of the back of the block...seriously save your self a headache and stick with your stock harness

 

Tell me you did not buy that CRX.