Volvo V4 Dual Colour interior lightsVolvo V4 Dual Colour interior lights (White Red) Fits All Volvo FH4 FM4 Series What Package Includes: A pair of Dual color interior Lights for VOLVO V4 Series + Dimmer (Optional) Connection White Lights: You remove the original festoon base and replace it with the festoon base of the white LED plates, the function remains the same it is turned on by opening doors and can be dimed from the Volvo main switch. Red Lights: You extend a dual color cable to