Fig. 189.-Diagram at A Shows Arrangement of Parts of 1915 OverlandAuto-Lite System and How They are Wired Together. B-Part Sectional View of Storage Battery. C-Automatic Circuit Breaker. D-Current Generator. E-Starting Motor.

plugs, one for interrupting the ignition through a fuse box to the controlling switch. The generator is driven from the motor crankshaft by a silent chain. The starting motor, which has the switch mounted integrally, turns the engine crankshaft through a gear cut on the flywheel rim. One of the wires of the generator is grounded, the remaining wire leading from that device runs through the circuit breaker and from that member through the fuse box and switch to the storage battery. Two wires run from the six volt

battery, one of these terminating on a switch terminal of the starting motor while the other attaches to one of the motor terminals. The remaining motor terminal is grounded. The various appliances comprising this system are all clearly shown, and the wiring may be easily traced from the various units through the fuse box and switch by careful study of the diagram. In order to simplify wiring, the wires going to the switch are all colored differently. This insures that they will be replaced on the proper terminals if removed.

The storage battery used with this system is shown at Fig. 189, B. It is a special form, in which the three cells are placed end to end instead of side by side, making a long, narrow battery instead of the usual construction, which is approximately square. The construction of the circuit breaker is shown at C, the contact points, which are the only parts needing attention, being clearly outlined. The generator, which is a very simple device, is shown at B, the points requiring lubrication, and the removable plates for inspection of the brushes are clearly depicted. The starting motor is

Fig. 191.-Starting Motor Used in 1916 Auto-Lite-Overland System with Automatic Pinion Shift at A. Automatic Cutout Shown at B. Method of Driving Generator with Silent Chain Outlined at C.

shown at E, the pinion which engages the gear on the flywheel is shown mounted on the armature shaft, and the cover, which normally covers the brush end of the motor, is removed in order to show the method of reaching the motor brushes when these members need attention.

Fig. 193.-Wiring Diagram of Auto-Lite-Chevrolet Starting, Lighting and Ignition System.

The diagram Fig. 190 shows the 1916 Overland Auto-Lite system. This differs from the 1915 system principally in the use of an automatic pinion shift, and the units are changed slightly in detail as outlined at Fig. 191, in consequence. The application of the system to the four-cylinder power plant is shown at Fig. 192, while the method of installing the units on the sixcylinder Overland engine is depicted at Fig. 193.

Gray & Davis System.-The starting and lighting equipment used on the Model 79, 1914 Overland, is the Gray & Davis system, shown at Fig. 195, and comprises three principal units: