anyone have a set on their car? if so how/where did you run your wiring, also, if it possible to hide the tubes, or no?

I sell Neon Add ons of ALL sorts.
I would recommend "looming" your wiring harnesses for your Neon to begin with to keep out the outside crap. As for where to run it, you can either run it up through the engine bay & then through the firewall or try drilling through an existing floor grommet strait into the interior.
As for the Tubes themselves, it depends on what Neon you want to run. I sell wheel well kits, full underbody kits, etc.

i dont NEED the kits im pullin off my neons from my truck i haver a PlasmaGlow full LED kit, Streetglow Gold Series White UB kit, Optx Blue kit, and a couple green 30" Gold Series tubes... i just need to know if i can HIDE the tubes on the bottom of the car or if that plastic underpan will get in the way......

i had them on my car. The side tubes suck ***. Totally visible. i ditched them.

the sides show btu the way i solved that problem is got some heavy duty black duct tape turn the lights on had a friend at a distance and told me when the bulb wasn't visiblesolved the problem and the still glow evenly on the ground

Sorry I misunderstood your question.
But yes the side tubes can be seen clearly.