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I never really thought about it until now. Must look into it.

I don't know for sure if it cycles on and off. My guess would be no, that's why a lot of people will put them on timers. I just plug it in when I get home. It's nice to get into the car at -20C and...

Yep. If continuity is there then it should be OK. Check the wire though just in case sharp metal edges may have damaged it. Just for fun, I plugged mine into a Kill-a-watt meter to see what it...

I done that a week after I made my block heater extension cord. Just heard a pop and realized that I forgot to unplug it. No damage; just broke one of my tie-wraps. I did up the extension cord...