Any suggestions on crate/kennel training a 5 yr old dog?

Actually it will solve your problems. Ok. To start with, when you buy the crate buy it so he fits in it and has room to sleep and move, but DO NOT buy it way to big. If you do then he/she will poop/pee in one side and sleep in the other.. The reason why you have to buy it that size is because he/she will not poop/pee where he/she sleeps, therefore he/she will hold it as long as possible so when the time comes when you let them out, they will use the restroom. Also eventually the crate will become your dogs safe spot, and how you develope that in your dog is, when you see him/her go to the restroom outside, you let your dog back in but leave the crates door open so your dog notices that "hey if i use the restroom i get to run around in the house". I hope i helped and Good luck (: