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Door / Window Alarm
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Bicycle Light
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Audio Cables / Test Probes
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Batteries
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Door / Window Alarm depackaged
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The one screw that needs to be removed
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The magnetic swtich
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Bottom of the PCB - see the blob? That is a "chip on board"
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Audio cables cut in half to make two sets of leads
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Stripped all the way down and twited together (stereo to mono)
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Clip the wire leading from the circuit to the battery
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Attach the probe wires to each lead
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Finished Tester I
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Bicycle light depackaged
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With the pastic diffusers removed
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Bottom of the circuit board
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Stripped lead wires with a cardboard interrupt
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A little help pressing the momentary button while testing the probes
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The finished testers I and II