This is my homemade polarity and continuity tester (max. 14 volts)
I used : 
2x Bright Leds
1x Resistor (depends on leds and voltage)
and some wires 
Circuit was made in multisim
What you've built is a voltage checker with polarity indicator. <br>A continuity checker (like for checking fuses out of the circuit) has its own battery and it needs no polarity indicator. <br> <br>What did you use for the body housing and probe?
old pen
Continuity tester is small battery

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Bio: My name is Alen and i'm average kid i guess. I love to make anything that need electricity, well i like building anything AWESOME...
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