This Active Noise Canceling T-Harness solves common problems for installers adding subwoofers or aftermarket speakers to vehicles with Active Noise Cancellation (ANC). The factory active noise-canceling microphones within ANC’s work by measuring the cabin noise in a vehicle and using the speakers to cancel out the road noise and decrease the sound. When adding a subwoofer, the ANC microphones malfunction and cause noise issues in the vehicle. This bypass harness is designed to solve this problem and is pre-wired for an Axxess LOC to be easily added to the audio system. Wiring is easy with plug-n-play connectors and labeling. This harness provides 12-volt constant, ground, and 4 sets of speaker wires.