I am trying to identify the location of the various auxiliary fuse boxes on my 2004 F250 6.0l. The main fuse box under the drivers dash is obvious but in the engine compartment near the drivers firewall there are two. I am guessing there may be more under the dash? I heard there is one behind the glove box but could not locate. I used a Chilton's manual and tried to trace wire color coding but "think" the only fuse box I have located and can identify with reasonable certainty is for the towing package. (One of the boxes near the drivers firewall, only two relays). The other box near this location has 4 relays and a 10 amp fuse not sure of its purpose? Next to this box is an empty stanchion, I think this is where the daytime running lights relay would mount if it had them. Thx for your help.