1975 V20 Step Lift
 

first of all I'm no mechanic much less a marine tech. so any help would be appreciated. the hydraulic shifter on 1975 V20 Step lift is leaking and also missing a micro switch. I'm planning on replacing the controller and the linkage as well as the hydraulic shifter if i can find one. anyone point me in the right direction. sorry if i didn't use the proper terminology.

thanks