[Feature] 4 wire double acting hydraulic power unit 12V DC, small area, use widely, easy to carry. [Wide Use] Fits most double-acting hydraulic pumps power units. [Reasonable Design] 2-button pendant control is most commonly used as a dump trailer remote, which is built of a high-impact, highly visible plastic with a standard 15' cord. Powered by 12 volts DC, well constructed. High quality ABS material protective shell for long-term use. [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). Notice: If you have any problems,pls feel free to contact us. Product Description More flexible, Improve efficiency 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. Wide Application Forklift Truck Dump Trailer Hoist Excavator