itsarealedgeiswear
+1y
Its the rheostat for the fan controls, depending on what speed you choose is how much resistance those coils will have, make sure none of the coils are touching each other when you put it back or you will not get your full range of fan speed. I did something like this on mine when I blew a airline out and my 20 went into the box, I just patched the hole with some actual metal duct tape not the gray crap and went on my way its been working fine and it was a quick fix. Hope this helps.