This wire harness and switch box kit will work with all our Yukon, Standard, and All-Steel Cabs. The kit includes a switch box, 4 toggle switches, a fuse block with 4 fuses and wire harnesses to power the front and rear work lights, a dome light, the heater, a circulation fan and a beacon light (these optional accessories are all available at extra cost). The heater switch is a 3 position switch, while the remaining switches are 2 position switches.