ELECTROCHROMIC Rear View Mirror
Remove rear view mirror. Using jumper wires, apply positive battery lead to terminal No. 1 and negative battery lead to terminal No. 4 at rear view mirror harness connector. See Fig 1. Connect positive lead of voltmeter to terminal No. 2 and negative lead to terminal No. 3. Press mirror switch. Observe voltmeter and shine an electric light on face of mirror. Battery voltage should be present and face should change from bright to dark. Replace rear view mirror as necessary.