The JK control module is the only way of keeping all the stock functions operational when upgrading to an Atlas transfer case. This Module lights the dash lights in both high and low range as well as the settings on the ESP when in 4WD and lockers and swaybar disconnect on the Rubicon models. This kit is designed for the Atlas 2 speed but can be used on a 4 speed, However, the is no provision to connect an additional low range switch in the planetary housing.
NOTE: This Kit ( is for use on Vehicles with Atlas Transfer Case Production date of August 2014 and Later. If your Atlas production date is previous to August 2014, you will need part number PN300377.