just to add something to the mix guys,
UNDERBODY NEONS WHILST ON ARE NOT ILLEGAL TO HAVE WHILE DRIVING
to be not illegal there are some rules:
-no leds or neons are allowed to be colour changeable, only 1 solid colour
-neon tube/light source must not be visible, only the glow onto the road
-must not flash like a stobe or be seen as a distraction to other drivers
-must not be blue, red or white like police car lights. others colours ok. pink, purple, green, yellow, gold etc
-glow of light not exceed past car more than 1/2metre in all directions
-not allowed in areas such as parcel shelf, open front grills, door pillars and the like
ALL THIS INFORMATION HAS BEEN TOLD TO ME BY A FRIEND WHO IS A COP WITH 35YRS EXP. NOT GOSPEL BUT GOOD AS.
also regulations may change in other states, this would b relevant to vic only