The OEM round aux light bulbs are a mere 3.5 watts. You can upgrade them with 4 watt Malibu bulbs from Home Depot and get a somewhat brighter OEM glow. Higher wattage bulbs are available in 7, 11, and 18 watts, but I am not certain what long term impact that would have on the circuit designed for 3.5 watts. Others have gone as high as 18 watts and reported no problems. Just know that going from 3.5 watts to 7 watts is a 100% increase in power on that circuit, so proceed with caution.Originally Posted by PeteVX