A few days ago I got caught in a monsoon driving my G. Last night I noticed my passenger side headlight was out (fog light still fine). I lowered the bumper and to my surprise the top cap of the headlight was off, which allowed water to go in. Im not sure what went, bulb...ballast (re used from 03 lights)...ignitor or all 3. Are there ways to test these? (without swapping from light to light)

Also are there any plug and play aftermarket HID kits that I could just do away with the stock system all together?

Sorry for my noobness, any information is appreciated. Everything I searched for turned up results for the fog light bulbs