How do I bypass the brake switch on the uv8...

You can doing using a toggle switch inline on the brake wire . If you have the remote then there is a sequence code you can put in which consists of ,
ok this is very easy
1. have your player on radio (am/fm)
2. go to settings (must have a remote)
3. click the language button (next step is where you need the remote)
4. type in the following numbers 543210 (make sure you hear the beep)
5. a new menu appers after the code (hard-drive)
6. click on the break-bypass button
7. turn on the bypass
8. click the x on the bottom of screen
9. your all set now you have your player unlocked so you dont need the parking break
10. REMEMBER SAFETY IS FIRST PLEASE BE VERY CAREFUL WHEN USING THIS UNIT PAY ATTENTION TO THE ROAD AND NOT THE PLAYER YOUR LIFE IS MORE IMPORTANT THEN THIS DEVICE