Tesla Windshield Wire Harness Adapter 3-Pin | Replaces 1782284-00-A | AWHD 2574

Modern Tesla vehicles incorporate electrical components into or behind the windshield glass — including rain sensors, cameras, heating elements, and autopilot sensors. The wire harness adapter connects the vehicle's electrical system to these windshield-mounted components. Without this connection, sensors and cameras will not function after a glass replacement.

Tesla periodically discontinues individual service parts due to design revisions, supplier changes, or parts consolidation. The Precision AWHD 2574 is manufactured to the same connector specification as the discontinued OEM part, providing a direct replacement for auto glass shops and installers.

The 3-pin and 2-pin adapters serve different connector positions or electrical circuits on Tesla vehicles. Your specific Tesla model and windshield will determine which connector — or combination of connectors — is required. Inspect the existing harness connectors on the vehicle before ordering to confirm the correct pin count for each connection point.

The harness itself is a passive connector — no programming is required. However, after a Tesla windshield replacement, ADAS cameras mounted behind or near the windshield typically require calibration. Follow Tesla's windshield replacement service procedure for any sensor calibration steps required after installation.

This adapter is designed to connect the vehicle-side harness to the windshield-side connector. Compatibility with aftermarket glass depends on whether the replacement glass uses the same 3-pin connector housing and pinout as OEM Tesla glass. Confirm connector compatibility with your glass supplier before installation.