I installed them on my bike to control various lights. They are very easy to install and leave very little space. I've been soldering my wires to the connectors since I installed them on a motorcycle. Super easy wiring. I have a wire that lights up when a button is pressed. The lighting is bright enough to see in daylight but not too bright at night. Let's just say you can easily tell if a button is pressed, not day or night. I wouldn't hesitate to order more if/when needed. I also installed a fourth one to control the AC/DC converter, it works like a champ.