He front radar socket (wiring harness connector) for the 2019–2025 Acura RDX and MDX links the vehicle’s main engine harness to the Adaptive Cruise Control (ACC) millimeter-wave radar sensor. This sensor sits behind the front grille Acura emblem.Because front-end collisions or road debris frequently damage this connector, it is widely replaced using a pigtail repair harness rather than swapping the entire main wiring bundle