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All Posts By

David Muench (Carnes Mechanical)


What is a Halo/angel eyes headlight?

Halo headlights (also known as halos or angel eyes because of the distinctive arrangement of the lights in a circle) are front car lighting units with glowing rings inside the headlight relay assembly. Introduced by BMW in 2000, Halo headlights were originally typical of that manufacturer's vehicles, but soon became…

What is daytime running light (DRL)?

Daytime running lights (DRL) are used to illuminate a vehicle in good visibility conditions during the day. On newer vehicles, it switches on automatically with the ignition and switches off as soon as the main lighting (low beam or high beam) is activated. What Are Daytime Running Lights (DRLs) for…

Combination low/high beam

Combination low beam/ high beam describes a vehicle that uses ONE bulb on each side, with that bulb also functioning as a low beam/ high beam bulb. Such a vehicle will have a total of two separate headlight bulbs, one left and one right. Low beam and high beam headlamp…

What is a Kelvin Rating?

What is the color temperature (Kelvin)? The color temperature of lighting is the heat of light. This says nothing about whether the lamp is warm or cold, but about whether its light has a cold or warm color. The color temperature is expressed in Kelvin. The higher the Kelvin number,…

What is CANBUS or CAN

What is CANBUS or CAN and how does it work? CAN (Controller Area Network) or CANBUS is designed primarily to allow microcontrollers and devices to communicate with each other in applications without a host computer. CAN was originally developed for automotive applications. Modern cars have up to 70 electronic control…