self powered test lamp
#1
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self powered test lamp
I need to make one, does it only consist of a battery [+] connected to a light bulb and a wire connected to the [-] which you connect to a ground and if the bulb lights up the ground is good? or do I have the concept misunderstood?
-justin
-justin
#3
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It sounds like you are making a continuity tester rather than a test light. Test lights to not need batteries because you are using the voltage in the car to turn the light on. However a continuity tester uses a battery to turn the light on once the circiut is closed.
#4
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I want to test whether a ground is good or not. And the service manual says "Use a Self-Powered Test Lamp" on the grounds.
-justin
-justin
#5
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I'll take a guess and say that you are testing the wires and ground points for your IP. Personally, I would use a multimeter. If a wire has a poor ground it still could light up a test light. Just not as bright. With a multimeter though, it will tell you exactly the difference between battery ground and the wire you're testing. It'* much more accurate.
#6
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Yep, I am testing the wires for my IP, ahh now i get what your talking about.. thanks dude! gonna go out and try that now!
-justin
-justin
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