REEMB18C1

im lookin to swap a 99 ls in my 95 coupe ex i needed to know should i use my stock engine harness and use a 94-95 integ dizzy or i was wonderin i seen someone use the 99ls obd2 engine harness on the eg's obd1 interior harness wanted to know would it work and would it thorow any code i know using my single vt ec harness is goin to leave my vtec wire hanging i think that would throw a code but would like to know if thats inter changeable