Curiosity teardown: block heater tester

Many of you may not have any context for this thing, but here in Canada it's a very useful little tool.

And this one is much more simple than I expected.

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This isn't the only way to do it. It's probably not the best way to do it. But it's how I did it. ... https://www.youtube.com/watch?v=XKi6eFMkhkI