A rearview mirror assembly for a vehicle includes an electro-optic reflective element with first and second conductive pads established at a fourth surface of the reflective element and in electrical connection to respective electrically conductive coatings of the reflective element. A back plate has first and second spring-loaded connectors disposed in passageways established through the back plate. A circuit element includes first and second conductive traces in electrical connection with the electro-optic control circuitry. With the circuit element attached at the back plate, (i) the first spring-loaded connector contacts and is biased into engagement with the first conductive pad and the first conductive trace to electrically connect the first conductive trace to the first conductive pad and (ii) the second spring-loaded connector contacts and is biased into engagement with the second conductive pad and the second conductive trace to electrically connect the second conductive trace to the second conductive pad.