Not sure if this is the right place to ask a question, but here goes.....my son just added a light bar to his 2016 Chevy pickup
He tapped into the PS side high beam for the relay trigger. Now his RS fog light doesn't work.

Before he added the relay, he tried to power the light bar right off of the high beam positive. It worked until he started the truck.



Any idea what causes this and is there a fix? Thanks!