Yes, you can replace your current lights with LED, and the voltage regulator for the dash does not need to be changed because it doesn't control the lights...just the gauges. LEDs are a good upgrade and you can use different colors if you wish. All you have to do is remove your current bulbs and put the LEDs in. Another suggestion is to remove the blue colored plastic lenses currently in your dash and use the LEDs to supply the colors. I would say stay away from the Scott Drake LEDs as those are what I bought at first and the bulbs didn't fit very well into the light sockets. Had issues of lights occasionally going out because of the poor fit and coming loose. I went to superbrightleds website and bought those for my car and have been happy with them.