how do u tell what obd a motor is like i got a 91 teg ls b18a1 putin in a 89 crx hf the ecu 91 teg is a pr4 with 4 plugs on the side

 

88-91 obd0
check the ecu if it can flash its obd0

92-95obd1
95+obd2

thats only for hondas though domestics are a little different

 

and use your stock harness out of the crx it will make life easier

 

and yes it can flash lights on ecu jas a little circle glass spot i c it yes i do lol

 

and um crap does anyone have a pic of what all the motorharness plugs are cuz ive never really delt with hondas befor and this 1 i bought came with no motor so makes the b18a1 swap weird for me right now first honda swap for me would be much apreiciated