The newly expanded range has increased to more than 220 SKUs, including 12V and 24V bulbs.
When a bulb burns out it can produce a message in the instrument cluster and even a code. Andrew Markel discusses the procedures required to troubleshoot the circuit and to get the message to go away.
Cornwell Quality Tools has introduced a new line of lighting products called blueION, developed specifically for professional technicians working in automotive maintenance and mechanical shops.
Andrew Markel discusses the HID ballast module and how the internal construction of the bulbs can render diagnosis with a voltmeter useless.