Water/Methanol for High Compression Naturally Aspirated and Forced Induction Gas Engines\nAEM offers two different water/methanol controller designs.\nRobust, Easy to Use Controller Designs\nThe new controller designs feature large, turn-resistant knobs and larger numbering to easily set accurate start and full activation points, with covered status LED and test buttons for added splash resistance. A plug is integrated into the controller housing for mating to the redesigned wiring harness's positive-lock connector. The Boost Dependent controller housing has a molded-in, barbed nipple to accept a boost hose and a wiring legend on the back.