I just got neons for my underbody and I was gonna install it myself on my tc instead of paying the 100$ a local shop said they'd do it for. Has any body done this yet, and any advice?

 

I installed on my XB. My only advice is to get under the car and plan where you are going to run all the cabling. Think about how to keep it hidden and out of any areas where it will get damaged. The hardest problem I had to overcome was where to mount the controller. The Optx controller fit nicely in the pocket under my stereo.

 

You might try the tC forum.