BRZ DRL Troubleshooting
 

I recently noticed that my passenger side DRL went out. Anyone have any tips on how to troubleshoot this?

I've got the Diode Dynamics boomerang kit installed.

http://imgur.com/a/wALYH

i had many issues with the boomerang kit when i first got it. the first 1 blew out my taillight fuse(apparently the DRL is controlled by that fuse), the 2nd one made my left turn signal my right headlight boomerang. and finally the 3rd one worked. but either way, take it to the dealers, take off the boomerang kit firs tho. and they should be able to replace it for you under warranty

Swapped the stock relay back in, disconnected the DD boomerang kit, and it still doesn't illuminate. I'll have the dealer check it out.