I need to replace the battery on my 2002 kawasaki zx12r motorcycle. How do I get to the battery?

buy a genuine manual for your bike before attempting to fix any wiring.

If you have replaced the stator, regulator/rectifier, and the battery I would suggest running continuity test on the wiring that is in the harness to check for breaks or bad connectors.

plates are usaully not the problem, the diaphram spring and collar are well known for issues

http://www.batteryspec.com/cgi-bin/cart.cgi?action=link&product=15&sub2=150039&sub3=Kawasaki_ZX-12R_%281200cc%29_%282000-2003%29_Battery

could be the starter solenod. you can find it by following the positive cable from the battery to the solenoid. try bridging the two posts with a pair of needle nose pliers. if it starts you now know your solenoid is bad. if it doesn't, could be your starter. check all wires clean and connected.

To change oil remove drain plug under bike, while oil is draining into pan remove left lower fairing and remove oil filter from front of engine. Replace plug and filter and refill, replace fairing.

http://www.motoverse.com/tools/vin/kawasaki.asp

Go to the above lnk and type in your entire VIN. You have only displayed 13 digits only of 17.

check your ignition switch to make sure its in the on position, also make sure you have a good battery and the cables are clean and connected properly