Loss of power to trim

[xtremist13]

Good evening,

At the end of the season last year when I winterized my pontoon boat (03 godfrey sweetwater 24 ft with a 4 cyl mercruiser inboard and alpha one leg) the leg went all the way down, but as soon as I did that it lost all power and wouldnt go back up or down. Seeing as how it was put away in the shed I didnt feel like dragging it back out and into the shop to work on it. Today I tried to do a bit of troubleshooting - by-passed the controls to prove the pump works fine, and unplugged the three wires going to the switch on the throttle - all three are dead, no power going up to that switch. It does have a trailer switch on the dash for lifting the leg higher, havnt tested power to it yet but its not working either. Does anyone have any idea on what to check now ? All the fuses that I can see (fuse panel on the dash and the inline right by the pump are fine). Really is aggravating that the boat didnt move an inch and this seemed to happen.

I appreciate any help at all.

 

[Bondo]

and unplugged the three wires going to the switch on the throttle - all three are dead, no power going up to that switch.

Ayuh,..... Welcome Aboard,...... The red wire is battery power to the switch,.....
Green is down power, 'n blue is up power,....

 

[alldodge]

All the fuses that I can see (fuse panel on the dash and the inline right by the pump are fine).

Use a voltmeter and measure power to see if power is on both sides of the fuse. It comes from the starter to the fuse, then to the pump relays