Customer Access (Upfitter) System

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

The auxiliary switch adds six switches to the overhead console. The switches control six relays which can be used by an upfitter for controlling customer installed accessories. Each auxiliary switch has an indicator that illuminates when the switch is in the ON position. When the ignition is in the RUN or START state, the 6 auxiliary switches enable its corresponding upfitter relay in the BJB (also refered to as BCMC).

Refer to Customer Access for schematic and connector information.

For accurate diagnostics of customer (upfitter) installed devices, it will be necessary to refer to the upfitter literature for information.

For more information, refer to the Owner's Literature and www.fleet.ford.com for truck body builder advisory service bulletins.