_Figure 76—Ignition and Light Switch, Front and Back Positions_]
=b. Service Stop and Taillight.= Light is located on left side of light mounting bracket. Top unit is used for service stop and taillight (double filament lamp). Taillight filament is controlled by ignition and light switch; stop lamp filament is controlled by brake‐operated stop light switch. Stop light does not operate in daytime when ignition only is turned on. Bottom unit serves as a spare blackout taillight. In case the regularly used (right‐side) blackout taillamp fails, its socket plug can be transferred to this taillight socket.
=c. Stop and Taillight Switch.= This switch is operated by brake pedal and is located on end of rear support rod on right side of vehicle. Refer to wiring diagram (fig. 73) and paragraph 118 for wiring connections.
=a.= Earlier models are provided with lock, later models are non‐locking.
=8=—GENERATOR SIGNAL LIGHT. =14=—GENERATOR TERMINAL TO SWITCH. =15=—GENERATOR TERMINAL TO RELAY. =26=—IGNITION‐LIGHT SWITCH. =32=—RELAY. =35=—TERMINAL STRIP BINDING POST. =36=—MAGNETIC SWITCH FOR BLACKOUT LIGHT. =H=—NOISE SUPPRESSION CONDENSER.
_Figure 77—Blackout Headlight Magnetic Switch on Later Models_]
=b. Remove.= Disconnect battery ground wire. Remove instrument panel cover (par. 119). Disconnect all wires from switch. Remove the four switch mounting screws and spacers. Switch is now free for removal.
=c. Install.= Mount switch on instrument panel base. Install four screws and spacers. Connect wires (fig. 73). Connect battery negative ground wire to frame. Turn switch on. Check lights and horn, tactical situation permitting. Install instrument panel cover (par. 119).
=a. Description.= Horn is mounted to headlight bracket by means of four bolts, lock washers, and nuts. One horn terminal is connected with operating button, and other terminal is connected to No. 4 ignition and light switch terminal (fig. 73).
=b. Adjust.= Tone adjusting screw is located in rear side of horn. If horn fails to operate and moving the adjusting screw does not remedy the trouble, horn must be replaced. NOTE: _Do not change position of the adjusting screw located in center of diaphragm._
=a. Cable System.= Since ignition and lights are controlled by the ignition and light switch, all wires terminate at the ignition and light switch. Cables for wire protection are used, making it necessary to replace cables rather than individual wires. A study of figure 73 will be helpful when removing or installing any of the wiring cables. Also study figures 78 and 79 and note how cables are arranged on frame, and how they lead to the switch panel.