[Wire Connection] For 4 wires(double-acting) dump trailer control: Use wire with metal round head connect to raising valve and lower valve. Use wire with circle connect to battery positive and starter. [Package Include] Comes with Mounting Holster +Magnetic Back + 4 Wires--Red - Power (to Battery), Blue - Raise (to Lift Valve), Yellow - Down (to Lowering Valve), Black - Start Master(to Starter). With a standard 15' cord, you can stand at the back of your dump trailer while dumping the load, which is more secure and handy enough.