The very last locker I would consider is the ECTED. In fact, I wouldn't run an ECTED if they gave one to me. Why? Because it is clutch-based. What's wrong with that? The clutch pack will wear out and even when brand new, the ECTED has earned a reputation for slipping on tough obstacles when locked.
The last thing you want happening on a tough obstacle you're trying to get up is to have your locker slip. And no, that's not a rumor.
So far as wires & lines going to the diff goes, that's really not an issue at all providing the installer simply routed them properly. Afterall, your axles already have brake lines running to them and brake & fuel lines run all over underneath your Jeep. Plus if you go to the hardest-core areas in the U.S. like Johnson Valley Calif. where they run the notoriously tough King of the Hammers event, you'd quickly learn the locker choice there is, more often than not, an ARB air locker. They have earned an enviable reputation for being bulletproof and ultra reliable. If they can hold up in Johnson Valley, nothing else is going to faze them.