Next to one of the female connectors on the board there are markings that say HDL1, HDL2, HNL and what looks like U+ (or V+?). These seem like they just have to be for lighting (HDL seems like it must mean headlight, right?) and it appears there are resistors on the board for all 3 contacts. The markings next to the connector on the other end are a little less clear as to what the purpose is (L1 and L2, I think?). I'm probably going to go ahead and purchase the male connector and wires and give it a go!