Radiator hoses usually only need changing if they leak or are very perished. An '05 should have reasonable condition hoses. If they do need changing or you are putting some crazy colored hoses on:
1. Take off your radiator cap.2. You may need to take the fuel tank off in some cases.3. Get a 2 litre container with a large opening or funnel ready to catch your coolant.

4. Undo the coolant drain plug/bolt on the water pump and use the container to catch the flowing coolant, it may squirt a little.
5. Match your new hose to the same section on the bike and make note of the way it is installed.
6. Loosen the hose clamps on the section you are working on and push them back along the hose a little way.
7. Gently twist and pull the hose away from it's connection points, if it's till tight loosen the hose clamp more.
8. Repeat 5,6,7 for any other hoses in the cooling system.
9. Transfer the hose clamps onto your new coolant hoses.
10. Install new hoses in the same position as your original hoses.
11. Make sure the hoses are fully pushed onto the connection plumbing.
12. Tighten hose clamps with a screwdriver, firm but not super tight or the hose clamp could become damaged.
13. Re-install your coolant drain bolt ensuring the copper washer is intact if used. Don't over tighten an alloy thread if applicable.
14. Fill your cooling system with anti boil / anti corrosion coolant, gently rock the bike from side to side to allow air to escape, top up as required.
15. Install your radiator cap.
16. Start the bike and check for coolant leaks or drips.
17. Re-tighten hose clamps if required.
18. Ride the bike around for a short time and check again.
19. Check the coolant level in the radiator, top up if required.
20. Ride Hard! (Always check the coolant level at regular intervals as a lack of coolant can lead to engine failure). General advice only.