umm B1 just told you guys how to do it!
just remove the 4-6 clips off the clear outer section... then with a heat gun SLOWLY heat up the sealant holding the 2 pieces together....
then gently pry them apart, making sure you are extra careful at the parker light end as it has a tab holding it to the rear section of the lights..
then once you have removed it you will need to clean off all the old sealant with thinners and a rag ( long job) re-apply sikaflex to join and put back together!
any more specific questions... let us know