i was wondering. Is it possible to have a dimmer switch connected to LED's inside or outside. I think that could add a nice touch to the LED's

 

Sorry man, but LEDs don't dim. They just turn on and off.

 

Led's do dim. If your going to do your own cup holder thing on an xA, look up under the cup console e-brake thing and there are 2 plugs a blue connector and a white one. pull the blue connector out and with the clip part of the plug facing up you will see 4 pins. The two pins on the left side of the connector are bottom left - Ground, and the upper left - Positive. Those work off of the dash lights and are controlled by the dimmer switch.

Hope that helps.