I have not replaced any LED light strips myself but my suggestion is to do a search on this forum or any others that you frequent. Or, do a Google search on the subject ( checked and there was a lot of hits) and check YouTube for the subject.
Hope warranty will cover it at least for this time. Another suggestion, add the make, model, year of your RV to your signature to get a more specific answer to this question and any other questions you may have.
2014 Palomino Puma 25RS 28 days in 2014, 47 days in 2015, 51 days in 2016 plus 6 more booked
2011 F-150 Supercrew 5.0 6spd, Me, Xyl and the 2 kids, BooBoo and Gracie (kittens)