FUSE and RELAY in GLOVEBOX of new 2010 F150
Did everyone install the FUSE and RELAY marked AL3T-15A416-AA that was in the GLOVEBOX of your new 2010 F150 FX4...
I dont have any instruction from the DEALER about this item. There was NO INSTRUCTION with the item as well.
One post here says it has to do with your OEM INSTALLED FORD BRAKE CONTROLLER. I checked the OWNER's GUIDE and did find a SLOT in the POWER DISTRIBUTION PANEL under the hood that calls for a FUSE in SLOT 21 LABELED "TRAILER TOW BATTERY CHARGE" and a RELAY in SLOT 9 LABELED "TRAILER TOW BATTERY CHARGER... Neither SLOT 9 or 21 have a FUSE or RELAY INSTALLED so I assume this is where these two items go.
I also discovered from the OWNER's MANUAL I have another FUSE PANEL INSIDE the truck under the RIGHT HAND side of instrument panel. Drawing looks like next to the PASSENGER DOOR. Was not aware of this panel being inside the truck. It shows at least ONE FUSE associated with the BRAKE CONTROLLER FUSE # 33.
My real question is DOES THE OEM TRAILER BRAKE CONTROLER installed by FORD require the FUSE and RELAY mentioned above to OPERATE MY TRAILER BRAKES. From the description of the labels from the owner's manual I am thinking this ONLY ALLOWS the TRUCK to CHARGE THE TRAILER BATTERIES probably using the BLACK WIRE marked +12vdc on the TRAILER CONNECTOR lid cover.
Last edited by Roy Braddy; 05-22-2011 at 06:40 PM.