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tion. The magnetic switch is a simple form operated by a push button. The plunger switch follows the conventional design for devices of this character. The wiring diagram when the plunger switch is used is very simple as outlined at A, Fig. 249. The other circuit at B shows the method of connecting the electro-magnetic starting switch.

The application of a Westinghouse generator of the simple form to a 1916 National Twin Six engine is shown at the top of Fig. 250. The method of mounting the starting motor is clearly shown in the top view of the motor at the bottom of the illustration. The

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Fig. 249.—Wiring Diagram Showing the Use of the Westinghouse Start

ing Motor with Mechanical Switch at A and with Magnetic Switch and Generator at B.

wiring of the Westinghouse lighting circuit is shown at Fig. 251. This does not differ greatly from other one wire systems having a separately mounted current regulator. The complete wiring diagram presented at Fig. 252 is that used on the Pierce-Arrow closed cars and shows all necessary connections as well as the various circuits for a comprehensive starting and lighting system.

The various accessory devices comprising the Westinghouse system are built on approved electrical principles. Some of these are shown at Fig. 253. To prevent injury to the battery and lights through short circuits due to accidents or carelessness, fuses should be used in all lighting circuits. The Westinghouse fuse boxes are not only thoroughly enclosed but they are arranged to use enclosed

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Fig.. 250—Views Showing the Practical Application of the Westinghouse

Generator and Starting Motor to National Twin Six Engine.

fuses which do not produce a spark when they blow. A four-circuit fuse box, as illustrated, is necessary if a dome light or buzzer is used, though a three-circuit fuse box will be adequate in the ordinary open car lighting system. A circuit is usually provided for the head lights, one for the side lights, and an extra circuit for

- Head Lights

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Toil Light

*G* Shows Ground Return Connection.

Fig. 251.-Wiring Diagram of Westinghouse Lighting System.

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Fig. 252.-Wiring Diagram of Westinghouse Starting and Lighting System Used on Pierce-Arrow Automobiles.

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the meter light, horn, trouble lamp, etc. The tail light can be so connected that it will light when either the head lights or side lights are illuminated or when both are used. The screws used for making connections to the fuse terminals are of a pattern that cannot be entirely removed, which prevents their being lost. The fuses

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Fig. 253.-Fuse Box, Connection Block, Junction Box and Lighting

Switch Used in Connection with Westinghouse Lighting System.

are of the indicating type, or glass tube fuses may be supplied in which the fuse wire itself is visible. A 15 ampere fuse should be used in the head light circuit, a 5 ampere fuse in the side light circuit and 15 ampere fuses in the extra circuit. The lighting switches used are of the push button type and are similar in operation to those used in house lighting. They are made in two, three

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