Where is the fuse box on a 2004 Suzuki Intruder?

Normally it's found under the driver seat

MOST OF THE TIME THE FUSE BOX IS UNDER THE SEAT AND NOT HARD TO GET TO

If you remove the green cover from the fuse box under the seat, you'll find two 30 amp fuses in there. I don't know which one is the "main". Perhaps they function together in concert, so if one is bad, both are bad. . . I derived this info from youtube, and the video was for a different model, but it was a Suzuki. They are probably similar in wiring. But, full disclosure - I am not a motorcycle guy. Good luck.

the battery is under the bike, bottom of box hinges down, just in front of rear wheel.
pain in the ***
some recomend parking bike wheels and kickstand on board for better access.

If grips are rubber, you may try using compressed air to help them slide off.

The main fuse is under the panel on the right side behind the forks and the rest of the fuses are in the crank case under the cover...where you fill the oil.

If grips are rubber, you may try using compressed air to help them slide off.