Good Morning all,
I recently bought a used 2003 R53 MCS
. I am having an issue that I cannot seem to diagnose. The front cigerette lighter has three wires in the harnees underneath and I have figured out they are the pos/neg poles of the lighter, but cannot figure out what the other wire is for (it has been jerry rigged).
The issue that I am having is that the lighter works, but if i plug a usb charger for my sat nav or iphone or any other device, I do not get power through the charger.
I have checked all the fuses, and have a replacement lighter socket on order. Any other suggestions and does anyone know what that other wire is for??? Thanks in advance for any help.