Quote:
Originally Posted by dad911
Also, As I posted earlier, the 12v test light is often more useful than a meter. It will determine not only if there is voltage present, also if it is at a reasonable enough current to light the bulb. For example, a circuit with alot of resistance(corrosion) may still measure 12v on a high impedance meter, but drop to zero under load.
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So, you're saying that if a wire is heavily corroded and has a lot of resistance, the meter may still read 12V but the wire will not be able to carry the current and power the accessory?