car lighter destroying usb chargers

Reply Wed 31 Aug, 2016 04:07 pm
My car cigarette lighter is suddenly frying usb chargers. Multimeter shows cigarrete lighter is putting out 13.6 volts when car is running. I got a new usb charger, plugged it in, and instantly it popped and smoked. This has happened to 3 usb chargers. Car is kinda old--1989 mazda mx-6. What in the world could cause this?
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Reply Thu 1 Sep, 2016 11:31 am
Jag I've had a similar experience, evidently very mysterious to the entire panoply. They've had my car now for about a year, apparently not quite sure what to do, how to start. Pun intended

Have you somehow reconnected anything recently
Possibly the lighter is supposed to be connected not to the metered load but directly to the battery so have you tried recharging without the engine running

Indeed are you sure you're supposed to charge the usb when the engine is running

Man, Con, et al; help
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