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Old 04-20-2016, 09:47 AM   #8
Tom Wesenberg
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Join Date: May 2010
Location: Mpls, MN
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Default Re: Testing for No Spark

Quote:
Originally Posted by Mitch//pa View Post
With the key on points open you should have power all the way to the moveable point arm.

Tom I hope you don't mind that I added that
Not at all. In fact I will add it to my original posting to make it more complete.

A test light is easier than a multimeter for these checks, and the light bulb puts a small load on the circuit being tested, so it can be a little more reliable in some cases.

It takes almost no current to move the needle on a meter, so a very poor connection can show full voltage, but the bulb will use a little current to make it light up, so if it's dim, you know you have a poor connection.
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