I purchased a basket case building - and am re-building and re-finishing the entire structure. It has 3-different circuit boards within the interior, along with a rats nest of wiring. I've isolated two of the circuit boards to two Miller Engineering signs (yet to be tested). The 3rd one appears to be connected to interior building lights, and am wondering if the Miller sign power leads should also be connected. Is this an AC to DC converter board or just a terminal of some kind (and if just a power terminal what are the various circuits on it for)? I suspect the red and white leads shown on the bottom of the board are the leads to be connected to a transformer - but can it be AC or DC power?