MB lighter problem
 

Hello.
, i've burned out 2 Cell phone chargers on my 190E (1989).
The cigerette lighter works fine but blows out the charger when i plug it in. i've measured the voltage is 12 vts on the battery and the inside of the lighter socket. Anybody can help? Thanks.

mb lighter problem
 

Could i have switched the wires when i was checking the lighter connection?
i just got the car a few weeks ago and checking things out ..

The lighter socket sidewalls should be at ground (0 volts) always. Make sure the sidewalls are not energized with any voltage.

Thanks, i did have the wires switched and it works now.