Both front & rear can be re-routed to gain quite a bit of extra length on extension. Because of where they're attached behind the shock towers the front connectors can be a PITA to unlatch. You can gain a lot just by pushing them free at the tower (two push pins visible in the wheel wells at the base of the towers) and then extending them. Pull out as much slack as you can, then strap them down with zip ties at the brake line unions. The rears are a snap, just unlatch the connectors at the wheel speed sensors, push out the zip tie at the control arm bracket on the axle, run the wires over the top of the axle tube (instead of underneath) and reconnect at the sensor. Use the same hole on the control arm bracket to zip tie the wire down. Will gain you maybe 2-3". I just did this after I had a flor jack release and allow the rear axle to drop too far, breaking the LR wheel speed sensor. It was fine at full droop with the shock installed, but I was pulling the rear springs and needed a boit more. JAck wasn't snugged up enough and it creeped down until the stop was the ABS wiring...DAMN!
The locker wires should have plenty of slack for up to a 4.5" lift. Again, they just need to be cut free from their zip ties and re-routed. Unlatch the (PITA) connectors first, then get the wheels off the ground and let the suspension hang all the way extended (one end at a time is fine). Route the wires so they have as much free slack as possible, then tie them down so the wires at the connectors aren't continually being flexed. SHould give you a few inches of free slack on both ends.
Really agree with the comment that someone could make a bundle by offering an ABS & locker wiring extension kit. In lieu of that, you can patiently untangle the stock wiring and gain enough to satisfy most applications.
BTW, that dealer that wanted $900+ is why the auto industry has such a bad rep.
Last edited by SoK66; 12-29-2011 at 02:16 PM.