I know that feelingMy neon went out. Pretty sure it was the ballast cause it flickered before it went out. I cant afford to get a Glitch ballast right now.
I thought about using EL tape for a taillight, but IMO it's just not bright enough to begin with (especially with my tinted tails.) And IIRC, EL tape loses about half of it's brightness over 2000-3000 hours, which would take awhile in a car, but it's another reason I've chosen to go a different direction.