Why can't you just disconnect one of the battery cables?
No...I don't want that steering lock...Why a steering lock when there is none on the Grand Cherokee since 2005! Having to leave the ignition key in the ACC position (to keep the steering unlock) for towing behind a RV is really poor engineering design.
On the JK the first click on the ignition switch locks the steering wheel and is "accessory" power on. Things like the radio will work in this position. If you turn the radio off I suspect there is very little power draw. You could tow it all day without any dead battery issues.
Mine is an automatic and contrary to what the owners manual states there is a steering wheel lock! You can test this by removing the key and turning the wheel more than 1/2 turn.
2002 WJ Limited, Stone White, 4.7L H.O., Quadra Drive
OME Springs, MX6 Shocks, BFG 265/70R17 All-Terrain, Level 8 Tracker Wheels
Wow! There IS a lock! I stand corrected. I just had never turned my wheel that far after ignition off. How about that. I guess I wasn't curious or concerned enough about the (ahem, assumed) lack of a lock to investigate.......