Heater Controls - What goes where?

[Xavier]

Hey guys, just picked up a '68 C20 a few weeks ago in desperate need of some TLC. It's my first foray into something of this vintage so please excuse what may seem like a dumb question but my truck didn't have the heater Controls when I bought it. I picked up a control panel from a forum member and I yanked out the seat and scrubbed the cab floor in preparation for getting this heater control panel and cables installed. The problem is with no pre-existing control I'm not sure on the cable routing or even which lever is which function. Also, there is what I'm guessing is some kind of blower motor resistor? I snapped a photo for help identifying the mystery component.

I appreciate your help.