Allows your rear turn signal lights to function as turn signals plus additional brake and / or running lights

When brakes are applied your turn signals will illuminate as additional brake lights

If a turn signal is applied, it will have priority over the brake light function on the side that is selected until the turn signal is canceled

Additionally, the rear light can function as running / marker lights when there is no turn signal or brake light (illuminates at 50% brightness)

Note:  If you convert turn signals into brake lights, you will need to change the bulb / lens to red: or replace the turn signal light with a red light