How do you wire a 4 pin to brake lights?

To wire a 4-pin connector to brake lights, first identify the correct pins: typically, one pin is for the brake light, another for the tail light, and the remaining two are for turn signals. Connect the brake light wire from the vehicle to the designated brake pin on the connector. Ensure the tail light wire is connected to the appropriate pin, and verify that the turn signal wires are connected correctly. Finally, secure all connections and test the lights to ensure they function properly.