What is the reason for the constant illumination of the turn signal on the Bestune B70?

[AliceAnn]

The constant illumination of the turn signal on the Bestune B70 may be due to a faulty relay or a loose connection in the wiring. Faulty relay: You can replace the fuse inside the relay. A relay is an electrical control device that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity meets specified requirements. Relays have both a control system and a controlled system and are commonly used in automated control circuits, where they play roles such as automatic regulation, safety protection, and circuit switching. Loose connection in the wiring: Another possible cause for the constant illumination of the turn signal is a loose connection in the wiring. Pay attention to the fact that some flashers have directional wiring; if the two wires are connected inversely, the light may stay on constantly. In such cases, simply swap the two wires of the new flasher.