I have a much older GC, but I believe the wiring for the chute deflector and its switch would be the same. Switch mounting is different, of course, as my "dashboard" is not like yours at all.
Assuming your switch is the same as mine:
1) being a 12VDC motor which needs to be reversible,
all four terminals are used.
2) those "crossover" brass strips are what allow the terminals that go to the deflector motor to reverse their polarity (and change motor direction).
3) my switch is a momentary (spring-loaded) with a center OFF; you push up for one direction or down for the other. The switch itself is mounted vertically so the pushing for "up" or "down" is more intuitive. (My chute rotator is also electric, with its switch mounted horizontally, to rotate "left" or "right.")
Apologies for the horrible picture, but the way my switch is mounted, the rearward two wires (one of which has an in-line fuse) come from the battery (+ and -) to supply 12VDC to the switch; the forward two wires then go to the motor itself. Refer to the second pic -- power IN (12VDC) is on the bottom two terminals, power OUT ("LOAD") on the terminals in the center of the switch.
I'll also add a spec sheet on the switch I'm pretty sure is the one used.
Hope this helps --
