I have a 96 integra that had a v-tech and a 97 integra LS, I took the 97 LS and put it in the 96 with the ECU and it runs graet but the ECU is not communicating causing a check engione light. There was one extra two prong/3 wire plug that I had from the v tech (V tech solenoid?). Will I need to change the wiring harness? Does this swap work? Help?