Electrical problem

[Gpearce]

Hello I have 2002 Mustang v6. I have a few problems I’m trying to fix. The dome light does not come on when I open the driver door but it does when the passenger door is open. But if the driver door isn’t open and I press the button for the windows the dome light will come on. Also the driver window and the knob to adjust the side mirrors don’t work. What’s steps should I take to troubleshoot these problems? Could these problems be caused by a short?

 

[wmburns]

If this were my car I would begin by testing the ground's ability to carry current. A test light is your friend. The mirrors, dome light, and the windows do share a ground.

Ground G400
in luggage compartment, LH side, rear

Here's some information that may help the trouble shooting.

Howto perform charging system voltage drop test
https://www.stangnet.com/mustang-fo...perform-charging-system-voltage-drop-test.56/