Spotlights in your Jersey Jack Pinball game (JJP) use a 12v source. It can be hard to find replacement bulbs that give the color and look you want while also 12v and having the correct amount of lumination. With this dimmer mod you can put any 12v bulb in your spotlights and use the dimmer function to adjust to as much light as you want. 

Installation is a simple plug and play procedure taking no more than 2-3 minutes. Adjustments in brightness are accomplished with a few buttons on the device and last settings are stored for later recall. 

One device is needed per spotlight (or group of spotlights). Should work with most 12v light sources as long as the voltage can be varied.