Ok i have a 1999 Hyundai Tiburon and i replaced mt stock spoiler with a shark spoiler. I hooked it up and the brake lights dont work. Everything is hooked up right i have no idea why the brake light is not working. please help me.

 

Check to see if the LED works. Hook it up to a 12V source. If it lights up...Double check your wiring. If you have a multi meter, check to see if you are getting 12V at the connection point. Or just cheat and steal a brake light bulb and use that to test for 12V. See if that will light up.

Let me know this doesn't work.