The pinout of main firewall connector (C202 connector) for a 96 Bronco. It has a slightly different pinout than the F-series trucks connector which can cause problems if interchanged like I found out.

Most pins are the same between the 2 which allows the engine to run and most thing work. main differences I have found are from 4WABS pin locations (including the VSS signal wires which will affect automatic trannys).
Different years also seem to have different pinouts based on Steve83's diagram of a 93s connector, you can also use his diagram to find out what MOST of the circuits stand for. view it here