These kits represent the complete integrated fuse box wiring systems available for your 1947-91 classic truck, Blazer or Suburban. Available in either a Deluxe 20 circuit or Standard 13 circuit system. These modular wiring harnesses include the necessary passenger compartment lead wires and mating connections that disconnect for each of the major branch circuits of your truck, making installation easier. Once the fuse box is mounted, each of the circuits are routed from the fuse box to their destination. Major branch circuits are then connected individually utilizing our easy to follow instructions. Constructed of the highest quality GM terminals and GXL/XLPE wire with a temperature range of -60°F to +275°F. Each harness is completely color coded and labeled every 2-3 inches for the headlights, parking lights, dome lights, tail lights, license plate and third brake light wires. Full color cook book style installation instructions and schematics are included. Deluxe 20 inch circuit wiring system includes complete wiring for instrument gauges including oil pressure, water temp, voltmeter, fuel and tachometer. Dash lighting for all gauges, speedometer, turn signals and high beam indicators lights. Includes instrument "gauge cluster disconnect" harness. Complete wiring for steering column including horn, directional signal switch and 4-way hazard switch. Standard 3-7/8 GM column connector set (male and female) provided to directly plug-in to any 1969-74 GM steering column. Terminals are also provided to make adapting to any aftermarket column a breeze. GM column mounted ignition switch connectors. Complete wiring for engine compartment including coil, GM points or HEI distributor, oil pressure, water temp senders, starter, neutral safety switch and electric cooling fan. Alternator leads for GM "SI" internal regulated and "1" wire alternators. Includes accessory feed wires for heater/AC, radio and wipers. Includes all fuses, flashers and horn relays. Deluxe 18 inch circuit wiring system also includes accessory power leads to wire optional items such as cruise control, clock, lighter, power windows, power door locks, power seats and electric fuel pump.