I would guess towing harness with such a small cross section of that paper. Or, the Bronco due to soft/hard top issues had a wiring pack once hard tops were available. Which bronco is this sheet for?
a bigbend
The wiring in the “A” pillar.
For big brother Bronco.I think this should cover it.
Ford Bronco Gets Built-In Upfitter Switches, Pre-Wiring for Easy Power Accessory Installs (motortrend.com)
Yeah...that's the Bronco with all the roof headaches. The sport should come prewired with a fixed roof. Try the Bronco6G forumThe wiring in the “A” pillar.