On Fri, 15 Jun 2012 21:04:03 -0700, Steve B wrote:

"James Waldby" wrote

What is the switch supposed to do in the application? If it's for
reversing the motor, the circuit it's in might be wired as illustrated
at the bottom of
http://tncscooters.com/index.php?route=product/
product&product_id=504.

--
jiw

Yes, this is the reverse switch. There are four leads. Two from the
battery, one ground to the motor, and one hot to the speed switch.

There are no other jumpers.

Six lugs on the switch, but only four wires? Hmmm

From your description, the switch _is_ shot. Things rust on boats...

I'd replace it with a regular old DPDT switch with the appropriate
crossover jumpers for reversing, and see how long the new one lasted. A
switch from Radio Shack may not last as long as the original; a good
switch from Mouser or Newark may outlast the motor.