[shorod]

Welcome to the forum!

Are you sure the fuse blows only when you step on the brake pedal? With all bulbs removed, did it still blow the fuse only when you pressed on the brake pedal? Did you also remove/disconnect the high-mount stop lamp?

You may want to install a test lamp in place of the fuse to save on fuses during troubleshooting. The test light bulb will light when the current draw increases. If you get basically a full intensity glow when pressing on the brake pedal, you can then go around unplugging items from the circuit until the test light no longer glows brightly when the brake pedal is pressed. At that point you've found your culprit.

-Rod