The brake lights won't go out. I pulled the fuse so the battery doesn't go dead, but can't figure out why they are staying lit.

I would check the brake light switch and see if it needs adjusted to make the lights go off when the pedal is not depressed. You figure that anytime you have lights lit when the engine is not running is using power out of the battery that is not being replaced and will eventually cause the battery to go dead.

brake light switch

Look Behind the triangle panel on the left side of the bike. Next to the battery. FUSES

if you are having radio issues where you have to mess with the fuse to make it work i would say it is the culprit for the battery draw, a lot of radios trigger the eject when power is reconnected for the memory wire, that is not a problem with the radio.
try unplugging the radio and see if that fixes the battery draw.

The brake light switch under the dash is compressed by the brake pedal when not in use, that should be the issue. You can check the voltage at the switch next to the brake pedal to verify voltage.

Not sure, but I've heard a bad hazard switch can cause strange problems.
Also, if your truck has a body control module that controls interior and lights, that may be your problem, too. Good luck.

if your hazard lights stay on, you may have a problem with the hazard switch on your stearing collum. try moving it back & forth several times, eg. on, off, on, off always ending @ off & see if that works. they do get sticky @ times. your brake lights will work but your turn signals won't work properly with the hazard switch turned on. let me know if problem persists & will see if i can help you more. good luck.

I had a similar problem with a Ford Ranger. check the Main harness bulkhead connection at the firewall for looseness and corrosion. Then check the backside of the fuse block for loose connections at the affected fuse positions. The brake light switch needs to be adjusted at the pedal to affect brake light staying off when you take your foot off the pedal. This circuit is hot regardless of key switch position. Brake light switch adjustment done incorrectly can kill the battery.

I don't have a fuse diagram, but you may want to try pulling the connector off the stoplight switch above the brake pedal. If that doesn't turn the lights off, your relay is shorted and must be replaced. If the lights go out, check the switch to see if the button is springing out or just replace it. Cost is $20 or less at autozone.

Have you checked to see if all of the fuses are good? That could be the cause for the radio and the tripometer not working.