The Stovebolt Site Forums The Shop Area The Electrical Bay Turn signals, need help

I am installing a new after market 12 volt turn signal with hazard emergency four way lights. My truck does not have LED lights. The turn signal flasher is for LED lights. I bought a replacement flasher without the ground pigtail. I installed the flasher. Connected battery. Turned the signal to the left side and the lights worked. Turned the signal to the right side and the lights worked. Turned on the four way lights and blew the fuse.