im new to boats so I im sorry for not knowing all the parts or names yet but I have a '72 mercruiser 165hp with an alpha 1 I think. when I bought the boat I could trim up but not down, the motor would make noise but no movement. the guy that owned it before rewired the trim system in a weird way so I went back to the original style controls and wiring. I had to jump with limit switch due to them not being available or a good system from what I read on here. now the top button does nothing, the middle button trims up, and the bottom button trims down for a short amount then goes up. im not sure where to go with this and am looking for help. I am a diesel mechanic and work on tractor trailers so I know my way around things but this trim tilt system in new to me. thanks for your help