i have a green Reactor neon undercar kit on my car. bought it just over a month ago. worked fine for two weeks, but went out after that and hasn't worked since (about 3 weeks). its more than warm enough for them to work, so its not the cold. installation was done according to the manufacturers directions. all the connections are fine. only thing that looks wrong is that there's condensation in both of the side tubes, especially in the passenger side tube.
only thing i can think of is that the condensation is causing the problem or the transformer is out.
any help would be great.

Check fuses...I dont think the condensation would do that to bulbs that are supposed to be outside and of all places under your car. They should have built in transformers so you should check those for sure. That wouldnt make sense as to why they all went out though. Where is the power hooked up to?

If condensation is in the tube you are pretty much screwed, the gas has been contaminated. Neon is a gas, and a noble gas at that. It will combine very easily with any other atoms in the tube.

its not the actual light..it's the plastic tube around the light. i was thinking the seals weren't air tight so some rain water got in there and hasn't left, but i don't have a better explanation for it.

fuse is fine. i have an extra ground on the thing (wire running to where ground should hook up plus the transformer (not built in) is screwed to a metal part of the engine bay). have the negative wire from the switch to the negative wire on the transformer, positive to positive on switch to positive on transformer, all the wires between the lights are soldered, heat shrink tubing, PVC tubing, electric tape.

and now that i think about it, i thought noble gases weren't the ones that didn't combine with anything unless you did something really crazy (outer electron valence is full or some shit like that).

either way...still waiting to hear from reactor

and now that i think about it, i thought noble gases weren't the ones that didn't combine with anything unless you did something really crazy (outer electron valence is full or some shit like that).

Noble Gases are only missing one valence electron in the outer ring. Therefore have more force to easily combine with anything. Thats why when I purge gas tanks before welding I use Argon. Argon is a noble gas and easily combines to the Methanol, therefore neutralizing it.