Ford Bronco Kill Switch Wiring Diagram - Hella Battery Switch, Starter Circuit

This document is a four-panel wiring diagram set (watermarked "Steve83") showing how to wire a Hella battery kill switch into a vehicle's starter circuit. The first panel, "STOCK STARTER CIRCUIT," shows the factory arrangement: battery to starter relay (with a fuse link feeding the ignition switch), starter relay to starter motor, and a lead labeled "TO ALTERNATOR & FUSE BLOCK." The ignition switch is drawn with its five positions: ACCY, LOCK, OFF, RUN, and START. The remaining three panels show alternative kill-switch installations: "MAIN KILL" places the Hella battery switch directly between the battery and the starter relay/fuse link, cutting all power; "STARTER DISABLE" places the switch between the starter relay output stud and the alternator/fuse block feed while the relay still powers the starter motor; and "ANTI-THEFT" places the switch in the small ignition-switch feed line downstream of the fuse link, so the ignition circuit (and thus starting) is disabled. All grounds are shown at the battery, ignition switch, and starter motor. A reader can use this page to choose and wire one of three kill-switch strategies using a Hella battery switch on a Ford-style starter circuit with an external starter relay.