So I recently purchased a 2001 Audi A6 2.7T From an auction for about 1,500. It drives yes. But these problems just keep escalating. So here is what I can tell you so maybe you can help me.

Headlights Work only when they want too.
I turn the heat on and the car will stall regardless.
Abs light comes on when I turn my Accessory lights on.
Also when accessory lights go on sometimes the headlights will as well.
When I turn headlights on all the way, My wipers turn on.

Seems to me like there is a mess of electrical problems, It could be a short, or a grounded out wire. Im no Audi Mechanic I have no Idea.

Any Information would be greatly Appreciated. Thankyou for anyone that can help.