yeah I was thinking along the line of a second switch, maybe an illuminated toggle in the plastic overhead corner panel(above the A pillar) so you to turn it on when offroading, and the locker switch can be activated as required.

since I put the locker in and regeared it has changed the vehicle for the better, should have done it years ago, I can now use 6th gear when previously I was always driving in 4th.5th, big improvement