All the lights in the TM are 12v. Some of them are Fluorescent and some incandescent. It is almost impossible to short a 12V incandescent light with water. If the bulb was very hot ( been on for a while) and cold water dripped on it, it might pop, but that would be it. If it is the Fluorescent light, it is possible that water on the high voltage board that fires the bulb,could short and a burning board or capacitor would smell then stop. If it is very humid outside and the AC is constantly running, it is possible to get a small amount of moisture condensing on the short duct that goes thru the roof. It is also possible that the drain holes for the condensate are partially blocked. If the filter was dirty, the coils could ice up due to a lack of air flow and when the compressor shuts off the ice would melt rapidly and overwhelm the drain holes and run into the TM. What doesn't make sense is that if the AC is on the front roof, how is water getting inside the back roof ( sandwich) unless there is a leak ( but it should leak when it rained as well.
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