Jeep Wrangler and Wrangler Unlimited (all models), you must have the ignition key in the first position to unlock the steering wheel. Even with all accessories in the Jeep in the "off" position, this first key position will still cause the Jeep to draw 2+ amps continuous. A fully charged battery will be incapable of starting the Jeep after ~5 or more hours of towing. To remedy this "problem", simply remove the Ignition Off Draw (IOD) fuse before towing and press it back in when you're done. Please note that Jeep advises disconnecting the cable from the negative battery terminal. This works too but may be more disruptive to channel presets, etc.
