For those seeking a clearer, smoother audio environment in their Toyota vehicles. The AC-T281 is a dedicated 28-pin + 10-pin harness designed for vehicles equipped with Toyota Display Audio (DA). Its generous 1.8m length makes it extremely easy to install aftermarket units. Its natural signal flow without damaging the factory wiring makes it ideal for those who want to upgrade their Toyota's sound while retaining its factory functionality. The stable signal transmission provided by a vehicle-specific harness fully supports the potential of the downstream DSP and amplifier, resulting in a noticeable difference in the sound's onset and information content. Choosing the right harness is the starting point for achieving high-quality sound. The AC-T281 will take your Toyota's audio to the next level. Additional wiring modifications are required for front speaker-only network mode.