could anyone tell me what the relays in the relay box (next to the underhood junction box) are?
there are spaces for four, two are occupied, but neither my chilton nor my owners manual want to tell me what those relays are for.

 

If your speaking about the external box that set next to the main fuse/relay box under the hood it holds Trailer relays -> Trailer batt charge relay - Trailer backup lamps relay - 4WABS relay 1 BRONCO ONLY #1 - and 4 WABS DIODE BRONCO ONLY

 

that's exactly the one i was referring to, thanks!