[Matt] wanted to increase the intensity of the center brake light on his car. The factory installed light uses a 20w incandescent bulb and although aftermarket LED replacements are available, he decided to take the retrofit on himself. Using the Fresnel lens from the light assembly as protoboard, he mounted a row of 10mm LEDs along with their current limiting resistors. He then broke the glass from the original bulb, removed the filament, and soldered directly to the two electrodes. This way the bulb socket can still be used to connect to the car’s electrical system.