Does anyone know if 1965 mustangs came with a light in the passenger side?
Im curious because the driver side door doesnt have a light hole in the bottom corner, but my passenger side has a small marker light there....did the previous owner put that or did it come stock?

 

Looks like it's a door from another car as the Interior Decor Group, aka Pony interior, had lights in the door towards the rear. It would be rectangular, about 2 by 6 inches.
Jim

 

One of your two doors is wrong. Does your car have the Pony interior? If so the passenger door is correct. If not, the driver's door is correct.

 

No, I have the standard interior, so its not the correct door for my car? Im tempted to just install the light, tracking down good doors around here is hard...hm