Blinker/Flasher Problem - LED Replacement

Getting sucked in by the LED craze, and because one of my tail lights was burned out, I purchased replacement LED bulbs for all of the rear lights on my Tacoma. Because of the low power requirement of the new LED bulbs, I also had to buy a replacement relay/flasher module (which was difficult to access) behind the interior fuse panel under the dash (the replacement relay is designed to work with both LED & incandescent bulbs).

Everything was working beautifully. I was so pleased with the performance & increased brightness of the bulbs, I decided to also replace my front blinker bulbs with LEDs.

When I installed new LED bulbs in the front blinkers, then none of the blinkers/flashers worked (front or rear). I checked the interior 10 amp fuse and found it was blown. I replaced the fuse, but the blinkers still didn't work. I even put the original incandescent bulbs back in the front blinkers, and they don't work either. Does anyone have an idea about this problem? Have I overlooked something? Is there another fuse somewhere (other than under the dash fuse panel) that controls the blinkers/flashers? Perhaps the new relay I installed has now gone bad???