MMM brushed, which wire to float?

[himalaya]

Okay I tried last night plugging the motor wires into the two outer sockets, leaving the one in the middle floating. When I heard the ringing I knew it worked. Thanks guys. :)

This is not a rc app. I moded my boat trolling motor(electric outboard engine for 2~4 passenger slow boat) with a MMM. It was equiped a switch resistor speed control which I thought was a junk. I put the MMM in together with a servo tester. Will see how it does this weekend, so far bench test has shown a muuuuuch smoother control.