sorry for the late reply,
i had a death in the family and havent been on much..
i didnt have a schematic but can tell you exactly how to do it and as a bonus you get to keep your existing switch!
on the relay i posted,
the red dot is battery positive (through a fuse or circuit breaker)
the black dot is ground
the other 2 go to the motor.
when you disconnect the existing wires from the motor, one of them will go to green wire, the other will go to the black wire (both pictured here at top)
if the landing gear goes in the wrong direction, simply reverse the motor leads.
for what it is worth, i was considering a dual motor setup also until i did this upgrade.