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Show Plug and Jack Is Handy for Auto Trouble Lamp A plug and jack, such as used in radio sets for phones and loud speakers, speak-ers, can be installed in the car for use with a trouble lamp. A jack of the single-circuit type is obtained and is installed on the dashboard, or any other handy place on the car. Two or three jacks can be mounted at other points1. A small hole is drilled and the jack is fastened with the FRAME OF CAR ' I Radio-Plug and Jack Installation on Auto Makes Handy Trouble-Lamp Arrangement. large nut. This nut serves as one connection to the battery through the metal parts of the car. The other connection is made with a single wire to the battery. A phone plug is connected con-nected to the trouble lamp with an extension eord.. Pushing the plug into in-to the jack immediately lights up the lamp. When finished using it, pull out the plug. Herman It. Wallin, Brooklyn. X. Y, in Popular Mechanics Mechan-ics Magazine. |