Ford 1989 Bronco Owner's Manual page 71

They are coded as follows:
Switch Circuit number
AUX 1
AUX 2
AUX 3
AUX 4
More detailed information about Upfitter switches can be found at
https://www.fleet.ford.com/truckbbas/.
2010 Econoline (eco)
Owners Guide, 3rd Printing
USA (fus)
Wire color
CAC05 Yellow
CAC06 Green with
Brown Trace
CAC07 Violet with
Green Trace
CAC08 Brown
Driver Controls
Fuse
30A
30A
10A
15A
71