Firstly, welcome to Ribnet!
Your question has a two faceted answer - namely the electrical and the mechanical side of the unit.
Fortunately, the mechanical side is easy - most units, regardless of the make & model will either simply work the throttle / gears, or you'll need to swap the throttle cable to the other side of a cam / lever inside the remote unit to work the throttle. Some have a choice of fixing points to give a different throw, but I think I'm safe in saying anything post about 1980 will be "universally standard". <cue a stack of posts proving me wrong
> If you have a 70s machine, you may find you'l lneed to stick to either an OEM remote or something like a teleflex where it will push or pull the throttle cable.
The fun but may be the electrics, as for example a Yamaha / Tohatsu / <substitute any make other than probably Evenrude> will probably have a different electrical plug to connect the key switch and deadman. You don't say what your setup is or why you're looking for a remote, but if your boat has the electrics in a panel rather than the remote box, it's problem solved there's plenty of cheap "Mechanical only" Remote boxes out there. If you have a knackered remote (they all fail eventually
), transplanting the electrics to the panel is not too difficult a job, and also frees up your choice of lever a bit.
Hope that's been some help, do let us know how you get on.