This plug and play harness is designed for the Stewart Warner EMP pump using a 4 pin DT connector. Since these pumps have a heavy amp draw we designed this harness with 10 gauge wire and a over sized fuse assembly. The pump lead is 4 feet long with ring terminals for power and ground to reach each battery terminal. There is also an 8 foot signal lead to be connected with switched 12 volt power to trigger the pump on.