Intellifeed Questions- Need Answers

[Micromag5371]

when you are going to intellifeed your gun, and you get the roller switch from radio shack, does it run on negative pulses or positive impulses? i mean, coming from the hopper of coarse. i say this because with an electricians testing kit(?) i want to find which tab(3 of them) on the microswitch in my hyperframe i can solder an intellifeed wire onto.

I wont do this until i am absolutely positive it will work, so i dont (no offense) want to hear any thoughs or theories, just so i dont mess up my equipment.

thanks