My Rugged Ridge cable lock kit just came in. Any dos and donts I need to be aware of before I tackle this? Will 3 rubber caps be enough to cap vacuum lines at the frame rail?

 

Lift the right side so oil on the diff will be going to the left, far from were you will be working.

Degrease the area prior to start, as this gets really dirty

Me personally, went a different route, having the axle connected all the time, by changing the position of the locker and having it fix with the C-clip, but this is also a good approach.

And yes, just capping the lines will be enough.