Question by Pyratas: How do I use a voltage tester?
I’d like to test for power getting from point a to point b in my car (ie, getting to the wiper motor). I have a tester that came with a toolkit I bought.
It looks like a screwdriver with a little bulb inside.
How do I check for voltage using this? Do I test with battery connected or disconnected? And how does it work?
Thanks (I really can’t find this stuff on a google search believe it or not!)
There’s no ground wire connected to this device.
Answer by kbyprotocal
This wil only test is there is power present. Touch the end of the point of the scerwdriver with the light in it the the positive terminal of the part you are testing , the black wire should be grounded to the car .
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