One highbeam not working
 

Hello!

I've noticed that my left high beam doesnt work on my s13. Both lowbeams work great but when I flip the highbeams on. The left headlight goes black and the right one works just like it should.
Any idea on why this might be happening?

Thanks

check the small headlamp looms haven't melted.

Switch the headlights, that will let you know if it's the filament or the wiring.

I had a similar problem. I ended up rewiring the lights with a new relay off the "good working" low and high beam, rather than try and track down a short in the wiring.