Cambridge Wire is red coated 14 gauge copper wire copper wire primarily used in automotive vehicles. But, 85716 Wire is also suitable for a broad variety of household, industrial, and commercial uses. Cambridge wire is available in a wide range of gauges and colors, watts, amperages, and lengths to assist with both small and large projects. And Cambridge Wire is constructed of high-quality materials for long-lasting durability to meet all of your wiring needs.