There's a reason we install these switches in our Custom Dash Panels & Custom Switch Panels....Over-engineered & manufactured for the incredibly harsh marine environment, these Genuine Carling Technologies V-Series Blue LED rocker switch bodies will upgrade the look & functionality of your boat, car, truck, RV, plane or whatever vehicle you have in a matter of minutes! You might be wondering, "How does the rocker switch backlighting work?"It's very simple! Scroll down and take a look at the diagrams below for each respective rocker switch. They fit perfectly with our Laser Etched Rocker Switch Covers, guaranteed to never peel or fade! Commonly used for, but certainly not limited to: V1D1-GXXB. What does all of that mean??V = V-Series Carling Technologies Rocker Switch1 = Single pole, latching across terminals 2 & 3D = 20a 12vdc rating1 = .25" terminal, no barriersG = Sealed, Independent LED (top), Dependent LED (bottom)X = Blue LEDX = Blue LEDB = No rubber gasket Commonly used for, but certainly not limited to: V2D1-AX0B. What does all of that mean??V = V-Series Carling Technologies Rocker Switch2 = Single pole, momentary across terminals 2 & 3D = 20a 12vdc rating1 = .25" terminal, no barriersA = Sealed, Independent LED (top)X = Blue LED0 = No LEDB = No rubber gasket Commonly used for, but certainly not limited to: VJD2-UXXB. What does all of that mean??V = V-Series Carling Technologies Rocker SwitchJ = Double pole, latching across terminals 2 & 3, 5 & 6, 1 & 2, 4 & 5D = 20a 12vdc rating2 = 10 terminals, .25" terminals, no barriersU = Sealed, Independent LEDs (top & bottom)X = Blue LEDX = Blue LEDB = No rubber gasket Commonly used for, but certainly not limited to: VLD2-UXXB. What does all of that mean??V = V-Series Carling Technologies Rocker SwitchL = Double pole, momentary across terminals 2 & 3, 5 & 6, 1 & 2, 4 & 5D = 20a 12vdc rating2 = 10 terminals, .25" terminals, no barriersU = Sealed, Independent LEDs (top & bottom)X = Blue LEDX = Blue LEDB = No rubber gasket