I have a '93 SeaSwirl with a 115 hp outboard Johnson engine.... previously,
I had some issues getting it started (due to not understanding how to
activate the "fuel enrichment circuit") and the fuel gauge was reading empty
even though the tank was full. There was a beeping alarm that would start
about 120 seconds after starting the engine (whether started cold or already
warmed up made no difference, 120 seconds after starting the beeping
begins). It was thought this might be related to the fuel guage showing
empty all the time...

I put a new sending unit in the fuel tank and now the guage is reading full,
but the beeping persists! :-(

We've already disconnected the brown wires from the temp sensors on the side
of the engine and that has no effect whatsoever. I got under the dash Sunday
afternoon and checked the alarm with a voltage tester and here's my
observations:

The alarm has 1 black wire, 1 brown wire, and 2 purple wires going to it.
The black wire appears to be a ground wire, and I'm pretty certain that the
brown wire is the same wire running to the temp sensors on the engine. 1 of
the purple wires runs to the ignition switch and is hot when the ignition is
turned on... the 2nd purple wire though goes back to the engine and I've
traced it to a module on top of the block directly underneith the flywheel.
The brown wire has no voltage in it while the engine runs (and the alarm
beeps), nor does the black wire (which I'm pretty sure is the ground wire),
but both purple wires show constant voltage while the engine is running!
Obviously the purple wire to the ignition switch is supposed to have power,
but what's with the other purple wire running to the engine? What is that
module with 7 wires running out of it on top of the block under the
flywheel? The purple wire that goes to the engine is labeled "7".

Any help somebody might offer would be greatly appreciated! I'm getting this
boat ready to sell and this beeping is the last issue I need to resolve!!!
Thanks!

ps. I took a pic with my digital camera of the engine where you can clearly
see this purple wire running into that module if it's help any... ?

- Michael