So I'm helping my neighbor with a SOHC ZC vtec swap in his 93 LX. Everything is in and there is no spark. He bought the motor from Hmotorsonline and we bought a Vtec sub harness from rywire and he's running a P28 ecu. So my question is what engine harness should we of used the zc harness? or the d15b2 harnesss? Because we used the stock d15b2 harness. The ZC harness was missing a plug. Could the harness be the problem?