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Show ! Secret Switch Prevents Theft of Automobiles With his snap-on Jumper wire an auto thief can readily bridge the Ignition Igni-tion wires of a car, when the switch Is thrown off, and complete the circuit, which enables til in to get away with the car. To prevent this many auto-sta auto-sta have a secret Ignition switch In ultlltlon to the regular one, but the tuto thief, after first bridging he reg-ilar reg-ilar switch, notices that there Is no llscharge on the ammeter, which Indicates Indi-cates an open circuit, and so be finds the second switch and bridges this one, too. However, the switch and conncc-'Ion conncc-'Ion shown In the drawing will foil tin Secret Ignition Switch Behind Dash Foils Auto Thief. expert thief, as with tills arrangement the correct discharge Is shown on the ammeter after the regular switch has been bridged, but the coll Is grounded so thnt the car cannot be operated. This is accomplished by mounting an extra switch behind the dash, of which one side Is connected to the frume of the cur and the other to the spark coil by carefully conceuled wires. Ordinarily, Ordi-narily, when the car is running, this switch Is open, but It Is closed to make the Ignition system theft-proof. Richard P. Cole, Peterson. N. J.. In Popular Mechanics Magazine. |