I just installed a pair of fog lights. They have 5 almost all blue LED's in them.. They are wired on a switch in the cab, and are not regulated by if the high beams are on or not. What I'm trying to figure out is if it's illegal to use them at night in the state of PA on the road

 

if in doubt, why'd you buy and install them?

lol


Honestly not sure about the Pa laws, but here in Florida, basically ANY blue aftermarket lighting is HIGHLY illegal. IIRC, green and violet are about the only completely legal colors 'round these parts, lol.

 

Depends if they are approved for on road use. IF they say for offroad only then no.

But if they don't blind people then run them. I used to run offroad only fogs on all the time on the streets, they were aimed so the light didnt get in anyones eyes..