Auto Meter 3288 LED Bulb Replacement LED bulb for most Auto Meter incandescent lit gauges, speedometers, and in-dash tachometers Replaces 161, 193, 194, & 168 style wedge base bulbs only Does not work with clocks, A/F Ratio, & Auto Gage Does not work with Digital & LED lit gauges (i.e. Cobalt, C2 ES, GS, NV, American Muscle, Sport Comp II, etc.)