Auxiliary Installation Voltmeter for Easy Compatibility CheckOur dashcam power adapter features an auxiliary installation voltmeter to help you quickly verify compatibility with your vehicle. When you start the vehicle, the voltmeter should display around 12V, ensuring a stable and secure power connection Compatible with Multiple Vehicle ModelsThis dash cam power adapter is suitable for select Chevy/Chevrolet: Malibu/BOLT EV/Equinox/Traverse/Blazer/Colorado/Silverado 1500/Silverado 2500/3500 HD/Canyon/Suburban, Tahoe/Cruze/Sonic/Trax GMC: Sierra 1500/2500/3500 HD/, Buick: Encore/Envision/LaCrosse/Verano/Regal/Cascada/Enclave Cadillac: Escalade/XT5/XT6/SRX,and more.equipped with auto-dimming mirrors. If you can't find your vehicle model, please refer to the full vehicle compatibility list 100+Specialty Dashcam Power Adapters & Customized As a professional dash cam charger adapter manufacturer, we offer over 100 specialized mirror camera GPS charger adapters along