Check the archives, there is a detailed explanation of replacing the lamps in these switches. In a nutshell, remove switch from console, unplug, carefully open switch by prying open the 4 locking tabs (lift with small knife blade, then slip insert flat toothpicks under each lock tab to hold open), unsolder lamp & replace. Bulb is available @ Radio shack, part # 272-1092B $1.50 for two.