The 05's don't have that slot.
The 05 non Rubicon has a "Clutch Defeat" slot in the fuse box under the hood and the Rubicon's have the ability to start in 4-low without pressing the clutch, no other step required.
I didn't have the t-case selector plugged in at the time and didn't know it, that's why mine wouldn't start without pressing the clutch pedal.
All is well now.
Vince