The LED Light Bar comes with a 12 volt DC car jack (with on/off switch) and approximately 75" of wire. The light bar color changes from Red, Green, and Blue and all the colors in between. Great for adding that custom feel to your car. Use over your stereo to add that perfect amount of ambiance light. Makes a great gift. Approximately 8 3/4" long, .7" height, .5" wide. Has a base that is approximately 2" long x .5" wide that you could apply glue or double sided tape to mount the LED Light bar. This LED Light bar is more for car decoration such as a ambience/aurora look. Not designed to use it for illumination of gauges. The product has a chrome plated look. Works for all 12 volt negative ground vehicles.