SteveB wrote:

On the right side of my merc 40 engine, facing it from the rear, is an
UP/DOWN rocker switch. Is this a power trim? Didn't see if it worked when
I had the motor running, and today when I pulled the cowling looking for
engine SN, I noticed some wires had been disconnected there.
Right now, I figure by the engine number that it is an '89 ELPTO. (Electric
Start, Long Shaft, Power Trim, Oil Injected)

It's to operate the trim/tilt from the back (an option to make it easier
when you're behind the boat on the trailer). If it's unplugged, water
may have gotten inside causing it run run when it wasn't supposed to.

--
Regards,
Dave Brown
Brown's Marina Ltd
http://brownsmarina.com/