The previous owner of my 1973 coupe installed remote racing style side mirrors. The driver side glass fell out and shattered and the passenger side mirror glass is loose. I have two new mirrors, however, the way the previous owner installed the driver side mirror is to just cut the cables. If possible, I would like to install the knob in the door panel to make the mirror functional. Any thoughts? Is it as simple as cutting a hole in the standard door panel? Thanks in advance.