First, let me say that this is a duplicate post as I wasn't sure where to best post it (it's also in the "All Motor" forum).

Hey guys. I've never installed one of these b4. Here are my questions:

#1) What should I use for a 12V switched source? And where, exactly, is it located?
#2) What should I use for RPM signal input? Again...where?
#3) There are two other wires...one gray and one yellow. Gray is "normally closed. This wire will remove the ground source at your desired On rpm, and complete the ground circuit at the set Off rpm", and Yellow is "normally open. This wire will provide a ground source at your desired On rpm, and remove the ground at the set Off rpm". Which do I use?

Thanks very much!