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AEM's Water/Methanol Injection wiring harness for AEM Multi-Input water/methanol controller (for both high compression NA or high boost turbocharged gas and high-boost turbo Diesel) is terminated with a positive-lock connector on one end and has color-coded wires to ease installation. Both the power and ground wires for the pump are included in the harness which simplifies the wiring process and eliminates any chance of the pump accidentally activating from a short in the system. An additional wire is included for adding an optional on/off solenoid to stop fluid flow when the system is inactive.