Auto alternator, battery monitor, display

It's very important to monitor the health of your car charging system. Now days it's very easy, here is how. Voltmeter Buy a 0 - 30 VDC voltmeter. I bought mine at amazon for about 2.50 usd. Connector I used a cork and shaved it a little so it would fit in the cigarette lighter.Made a small ...

By: 3366carlos



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from Instructables: exploring - technology http://ift.tt/1DdaWjm