How can you know if your mirror is heated or not you see 4 wires which tell you that they supply the motors with power1997 ford expedition?

To determine if your mirror is heated, check for a switch or button that activates the heating feature, often located on the vehicle's control panel. You can also inspect the wiring: if the mirror has a heating function, the wires will typically connect to a heating element within the mirror. Additionally, if your mirrors are designed to defrost or clear fog, they likely have heating capabilities. If unsure, consult the vehicle’s manual for specific details about your mirror's features.