[brian2350z]

New Mariah owner here and I have some issues that I need to address. First for the power package. I am pushing a Merc 7.4 454 Bravo with Bravo Sterndrive. My blower suddenly quit working, no sound what so ever, not sure where to start. Second issue is about trim. I can trim down, but not up again no motor sound. The only time I can trim up is with the trailer button. Third, my speedo is lifeless. I read about blowing out the pickup tube, but all I have is a transducer (uh that sound fancy), what do I do about that. Ok I have more issues, but I will stop for now as I dont want to go against forum rules. Any help will be greatly appreciated.

[Dredd]

I don't think you're gonna break any rules. Everyone will be happy to try to help.
The blower - Have you checked the fuse?
The trim - Sounds like a classic case of a failed trim position sensor. Occasionally the unit can be cleaned and will start working. It's a common enough problem that it's got a sticky thread, here, in the Mercury MerCruiser Maintenance forum.