There are a few types of DCCD Controllers on the market, and our transmission harness works with all of them.
If you already have your controller and are a DIY kind of person, then our DCCD Transmission Adapters are perfect for you! Just plug the adapter into your transmission and tap into the three wires on your DCCD Controller of choice.
If you are using iWire’s iDCCD controller plug-and-play kit, the installation is much simpler than a traditional universal DCCD controller setup. Instead of wiring a separate controller into the adapter, iDCCD is designed so you can plug the kit into the supported Subaru transmission and chassis connections, then handle setup and control through the iWire Connect app. The guide below is still helpful for understanding how a traditional DCCD controller install works, but for supported applications, iDCCD makes the process much more plug-in friendly.
Check out iDCCD by clicking here!
To install one of our transmission adapters, first connect the matching plug from the old transmission wiring coming from the body side (single 4-pin or 2 x 2-pin). Then plug in the 6-pin connector into your new transmission wiring. Next, run the 3 wires from the engine bay into the cabin to the controller. Finally, hook up the three wires (Red, Black, and White) into your DCCD Controller using the provided crimps. Here is our Basic Crimp Guide for more information.
Red Wire - Power Output Wire. This wire provides power to your controller. You will not need to feed any other power to the controller; the adapter does that for you.
Black and White Wire - Signal Wires. These wires provide a signal output from the controller to the center differential. This is how the controller tells your center diff what to do.
Turbo to DCCD Transmission Adapter
NA to DCCD Transmission Adapter
2015+ WRX to DCCD Transmission Adapter


