Switches, sensors, and modules are what tell the rest of the vehicle what the drivetrain is doing, from four-wheel-drive indication to speed signal. When a swap leaves these behind, dash indication and electronic control both suffer, so replacing them with the correct unit restores expected behavior.

Advance Adapters 300378X Installation Notes:

• Low Range Indicator Switch for Jeep JK and TJ Rubicon Applications.
• Sold Individually.