I got a quad on trade with a 600 f4i fuel injected motor mounted and everything came with ecm gauges and ignition switch it would start off ether but since i took it apart to hook up throttle cable rewire aftermarket fuel pump and kill switch now seems like its not got spark idk how to check on this motor and the harness was already cut up a litle but can i cut all wires 6inches long at the ecm and just rewire the ones i need grounds maf fuel injectors ignition and starter and kill switch wires and spark wires or no