There is a right up here on the site. There really is 2 methods. The link below is how I did it. Bought the led panel that fit perfectly in the switch, and isntalled it as per the instructions. The other way (didn't find the link) is to make your own panel and in stall it. http://www.tacomaworld.com/forum/lighting/68173-rcbs204-4x4-illuminated-switch.html Really good mod that is very useful
