Keith Atlanta

I have HP gimbles and just replaced my Livorsi thumb switch on the throttle with a new switch, new diodes and gold plated connectors. The switch on the dash and the switch on the throttle work spotty for the starboard drive for the up position. Sometimes it works great sometimes it wont work at all. The fluids are full. I swear it works better when the boat is turned off but I cant confim.

Where do I start this process of diagnosing?

I have standard Merc bravo hydraulic trim systems for the drives and tabs. As you can guess, it is driving me nuts since I thought the new trim switch would fix it all... But it didnt so here we are!

Somethin' Sexy

solenoid....

nailit

I had same issue in my 25ol.. changed both solenoids on trim pump.. easy and cheap.. well on a single.. lol

For some reason,, grass is green and sky is blue stuck in my mind.. "wire diagram"

Keith Atlanta

OK went over today and tried it again.

But the weird part is that I swapped the wires form the throttle switch and now it does it in the down position... Where do I start? The Diode? The Throttle Switch or the dash switch?

I play with the switch long enough I can make it do it again. With the boat off the solenoid clicks but the drive doesnt move.
So now I am really confused.

Griff

Your throttle switch is wired into your dash switch via the diodes. This would make the problem in the actual dash switch wiring.
It sounds like you have a bad connection on one of the power wires for the up position. Clean the connections on the wire and the switch and make sure they fit tight.
Also check the grounds for that switch, but since it only does it for up, it is most likely the power wire.