When converting your 1994–2002 Dodge Ram 1500, 2500, and 3500 4x4 to free-spin hubs or eliminating the CAD (Center Axle Disconnect) system, you lose the factory 4WD indicator light functionality. This plug-and-play relocation harness restores that functionality—without vacuum lines or permanent modifications. Fits all transmissions, NP231, NP241DLD, and NP241DHD transfer cases. 
 
Key Features:
Eliminates vacuum switch and leak-prone vacuum lines
Retains 4WD indicator light functionality using an electric switch
Compatible with Posi-Lok kits and other CAD delete setups
Made in Iowa with USA-sourced GXL automotive wire
Includes braided sheathing, weatherproof connectors, and pushpin zip ties
 
Benefits:
Prevents HVAC issues caused by vacuum leaks
Cleaner, more reliable setup for off-road use
No permanent modifications—fully reversible
 
Installation:
Simple plug and play install. No cutting, soldering, or wiring knowledge required. 
        Remove factory vacuum switch and lines
Route harness along original vacuum line path
Replace vacuum switch with  electric switch in transfer case
Plug into existing CAD harness
https://youtu.be/JhMVfHthCuw?si=erluoPe38U6ZI5Wu
 
Note:
 Optional switch is different than the stock switch found on the CAD and cannot be reused.