You can remove the ashtray and then unscrew the two brass screws that hold the mount to the console. They are about an inch and a half back and three inches apart going up into the ceiling, so to speak, of the ashtray compartment.The bulb socket is part of the mount. I just don't know how much wire slack you will have if you do it that way.
I know because I just removed my ashtray in my NO Smoking 4Runner to make the hole into a storage cubby.