Hobbies And Interests
Things You'll Need
Instructions
Check the voltage produced by the power source. You can find it on the label of the battery pack or the transformer. You need a lightbulb that uses the same voltage as the power source.
Put the lightbulb into a lightbulb holder. Use your fingers to screw in the bulb. Loosen the terminal connection screws on the bulb holder using a screwdriver.
Cut two 12 inch strips of AWG 16 gauge, or similar size wire, using a knife. Remove 1/2 inch of plastic of the ends of the two wire strips using wire strippers.
Slide the end of one of the wires under one of the bulb holder terminals and tighten the screw. Slide the end of the other wire under the other terminal on the bulb holder and tighten the screw.
Locate the terminals on the power source. Place the opposite ends of the two wires connected to the bulb holder onto the two terminals; it doesn̵7;t matter which one. If the lightbulb illuminates, the power source is operating correctly and there isn̵7;t a short circuit with the power source. If the bulb doesn̵7;t illuminate, the power source is dead, or there is an internal short circuit so the unit needs replacing.
Place the ends of the wires connected to the lightbulb onto the two terminals on the electrical item connected to the power source. The lightbulb illuminates, if the circuit wiring doesn̵7;t have a short circuit. This means that the short circuit is caused by the electrical item. If the bulb doesn̵7;t illuminate, then the short circuit is in the wiring between the electrical item and the power source.
Keep one of the two wires attached to one of the terminals on the electrical item. Place the end of the other wire onto one of the terminals on the power source. The lightbulb illuminates if the circuit wiring is correct. If it doesn̵7;t, it̵7;s either because you have connected two positive or negative terminals, or there a short circuit in the wire.
Move the wire attached to the terminal on the electrical item to the other terminal on the electrical item. The bulb now illuminates if there isn̵7;t a short circuit. If it doesn̵7;t light, then the short circuit is somewhere along the wire and needs replacing.
Repeat the procedure by moving the wire connected to the power source terminal to the other power source terminal. The lightbulb illuminates, if the circuit wiring is correct. If the bulb still doesn̵7;t illuminate then you need to replace the wiring.