Here is an interesting replacement with a combination option. Might be nice if you lock yourself out. Since our 06 has the two separate locks it would be beyond my skill set to replace ours.
Amazon.com: RVLock V4 Keyless Handle w/ Integrated Keypad & Fob - Keyed... (https://www.amazon.com/gp/product/B01NCXKLPL/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=knowledgeshar-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B01NCXKLPL&linkId=732dcec34862cd52b62a1be9d273ff91)
Jim
My wife bought me one of those last christmas. Striker plate was a different size than my 2002 LD. And it looked like a big job to change it. Plus the unit came broken with the pins sheered off.