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  1. #1
    My Boats:
    1986 Glassmaster 244 Heritage
    Join Date
    Jul 2007
    Newport News,VA

    Mercruiser tilt/trim wiring

    I've made good progress on the boat and am down to wiring the power tilt/trim. My controller has four buttons. The two on the left are trim, and the two on the right are tilt. There is a five wire ribbon cable coming off of the controller and a three wire plug on the pump motor, as well as power and ground. The boat is an 86 Glassmaster 24.5 Ft cuddy with a mercruiser 350 and an Alpha one drive. I've searched everywhere for a wiring diagram and haven't had any luck yet. Help!! Thanks in advance.


  2. #2

  3. #3
    Join Date
    Dec 2012
    New Orleans, LA
    Red is always power. Blue like the sky is up. Green like grass is down. Purple wire goes to blue after it passes thru the trim limit. This wire is interrupted when the unit gets partly up.

    The pump does not need to know about limits and only uses the blue and green for direction with an extra black which is the 12v neg, all the other wires are 12v pos. the green and blue do not go directly to the motor but operate two solenoids which operate the motor remotely using larger wires with the same blue and green colors.
    good luck

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