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Start Solenoids
Start solenoids initiate the energy to start the electric motor for powering the liftgate. Generally 3-post start solenoids are used for power up/gravity down lift gates. 4-post start solenoids are found on power up/power down lift gates. Start solenoids may have a flat base to be mounted on the frame or a curved base to be mounted on the side of the 12 volt motor.
Most liftgate start solenoids are intermittent duty and do not run continuously. A few are continuous duty solenoids for ongoing applications. Manufacturers include Trombetta and Ametek.