Thanks all. Went through the whole system and ground was loose somehow. All good for now. Unfortunately not sure where it was wrong as while chasing the lights came on. Hopefully fixed but at least confirmed issue if it repeats.
I have a 2023 black diamond . Installed oracle foglights this summer and they worked great on aux 1. Until yesterday. They both just stopped working. Wiring seems fine. Fuse seems fine and aux back light works. Any ideas?