I want to put a remote trim switch on my boat because I tend to leave the drive down when parked, but hate having to get up in the boat, turn a battery on and running the drive up/down, then get back out, cover it.....yada yada.....etc.....

But I know they make on-wheel trim switches. Is this a wireless setup? Is it possible to install a wireless setup and use a keychained size remote to run the drive up/down? This would obviously have to be "jacked" straight into a battery so I can leave the cover on and such. Also, I am having trouble finding a plain old remote trim switch. I'm thinking a lift actuator switch should work though.

The wireless trim on boats usually use contacts in the wheel hub.
You could buy a wireless remote lock kit with the keychain transmitters at most auto/electronics stores (under $100) and wire it up to your trim relays.
But you're still going to have to turn the batteries on to power the trim pumps.
Gary

You could just run the relays for the key lock set up directly to your batteries.