my bro in law has a 4 door daily driven car and it sucks driving it in the fog/rain/night time. Any recommendations on a functional driving light/fog light?

From what I know, yellow cuts through fog...

TIA

 

piaa makes a yellow/white combo foglamps and comes with it's own harness and relay assembly...not exactly plug and play but installation is about a 4 from 1-10...a bit costly but worth every dollar if you ask me, rather than driving in the dark.

 

i believe i have the piaa's you're talking about, dual sport 900's, older model, but man they work well, and the install is somewhat straightforward. as easy as it'll get with aftermarket fogs.