Ok, if your carring stuff to repair a 12VDC curciut for a E-Locker, you would be carring a repair stuff (coupler/tubing) for an air locker.
Jodo
You don't need to carry anything to fix it.
Just touch the Wires together to get a current going till the actuator locks them.
Unless it's already locked, then you wouldn't be able to unlock it without touching the wires again.
If you're up to your door sills in mud, and the Air Line breaks.... it's not so easy to just jump down and fix it. Hence one advantage of the ELocker over the ARB.
But there's so much more to consider than just that. I was simply pointing out a advantage of the ELocker.