Coleman Cable 16-1-16 16-Gauge 24-Foot Automotive Copper Wire, Red Road Powers Primary Wire is manufactured from full gauge copper and engineered to handle the harsh environment of multiple automobile compartments 16-Gauge Wire with 0.104" Outside Diameter, 24-Foot Length Applications include: Headlight Circuits, Radios, Relay Switches, Control Panels and other low voltage circuits for use with automobiles, boats, trucks, RVs and trailers PVC outer-jacket that resists water, oil, chemicals, abrasion and can handle temperatures up to 185F (85C) RoHS Compliant