American Autowire 500434 1957 Chevy Style Wiring Harness

If you need a harness that has modern features, this is the one for you. This Classic Update wiring harness from American Autowire allows you to plug into the original gauges and dash accessories, headlights, taillights and heater controls.

Included are connectors for most aftermarket gauges, steering columns, air conditioning, power windows, locks and seats and stereos. Headlight, ignition and dimmer switches included. For use with 1957 Chevy passenger cars, wagons and Nomads only.

This harness makes use of the stock key and tumbler. If a new key and tumbler are needed, they are available from the manufacturer.

1. Original headlight bucket grommets, parking light weatherproof boot, tube assemblies, and light sockets are included. Extra long leads are supplied for custom routing.
2. Accessory disconnect provided for connections to power windows, power seats, cruise control, fuel pump, power door locks, extra radio (CB), or optional power accessory.
3. New floor dimmer switch is provided. Wire length and connection accommodate original floor mounted dimmer switch.
4. Standard turn signal flasher, hazard flasher, and horn relay mounted on fuse panel.
5. Fuse box and custom mounting plate are designed for bolt-on, under dash installation. All required hardware supplied.
6. Steering column connectors will plug directly into most aftermarket steering columns as well as 1969 and later GM columns which utilize stock GM turn signal switches. The original column can also be wired by using the supplied mating connector and terminals.
7. Heater control panel lighting, power, and blower motor leads are included for original style heaters as well as aftermarket heat and AC updates.
8. Instrument Cluster wiring is designed with a "cluster harness disconnect" system for easy service and assembly. All original terminals, connectors, and light sockets are also supplied for original cluster gauges.
9. Replacement headlight switch with internal circuit breaker, retention collar nut, adjustable length shaft, custom knob, extra connectors, and instructions are included.
10. Original design rear body weatherproof boot and tube assemblies and original design light sockets make attachment to original or reproduction tail light assemblies an easy plug-in.
11. Rear body harness assembly is designed to plug into the main harness in the original under dash position utilizing existing retention clips. License plate connectors and terminals included. Fuel tank sender wire and terminal included. Special terminals included for original.
12. New ignition switch is included with indexed connector. Additional connectors and instructions are provided to use the original 1957 ignition switches, original style door jamb switches, and overhead dome light.
13. Front lighting includes extra long leads for special routing when custom under hood appearance is desired. All headlight, park light, and directional light connectors and terminals are provided, as well as a switched trigger wire for electric fan relay (usually recommended with AC).
14. Engine wiring includes connectors for points type and HEI distributors. Power and tach connectors supplied for GM HEI distributors. Alternator connectors are supplied for GM "SI" series internal regulator and "one wire" alternators.
15. Engine wiring includes starter and gauge sender leads for water temp, oil pressure, and tach. Heavy 8 gauge alternator leads are supplied. Power circuits are fusible link protected.
16. Color schematics and easy to understand installation instructions included.

This harness makes use of the stock key and tumbler. If a new key and tumbler are needed, they are available from the manufacturer.

1. Original headlight bucket grommets, parking light weatherproof boot, tube assemblies, and light sockets are included. Extra long leads are supplied for custom routing.
2. Accessory disconnect provided for connections to power windows, power seats, cruise control, fuel pump, power door locks, extra radio (CB), or optional power accessory.
3. New floor dimmer switch is provided. Wire length and connection accommodate original floor mounted dimmer switch.
4. Standard turn signal flasher, hazard flasher, and horn relay mounted on fuse panel.
5. Fuse box and custom mounting plate are designed for bolt-on, under dash installation. All required hardware supplied.
6. Steering column connectors will plug directly into most aftermarket steering columns as well as 1969 and later GM columns which utilize stock GM turn signal switches. The original column can also be wired by using the supplied mating connector and terminals.
7. Heater control panel lighting, power, and blower motor leads are included for original style heaters as well as aftermarket heat and AC updates.
8. Instrument Cluster wiring is designed with a "cluster harness disconnect" system for easy service and assembly. All original terminals, connectors, and light sockets are also supplied for original cluster gauges.
9. Replacement headlight switch with internal circuit breaker, retention collar nut, adjustable length shaft, custom knob, extra connectors, and instructions are included.
10. Original design rear body weatherproof boot and tube assemblies and original design light sockets make attachment to original or reproduction tail light assemblies an easy plug-in.
11. Rear body harness assembly is designed to plug into the main harness in the original under dash position utilizing existing retention clips. License plate connectors and terminals included. Fuel tank sender wire and terminal included. Special terminals included for original.
12. New ignition switch is included with indexed connector. Additional connectors and instructions are provided to use the original 1957 ignition switches, original style door jamb switches, and overhead dome light.
13. Front lighting includes extra long leads for special routing when custom under hood appearance is desired. All headlight, park light, and directional light connectors and terminals are provided, as well as a switched trigger wire for electric fan relay (usually recommended with AC).
14. Engine wiring includes connectors for points type and HEI distributors. Power and tach connectors supplied for GM HEI distributors. Alternator connectors are supplied for GM "SI" series internal regulator and "one wire" alternators.
15. Engine wiring includes starter and gauge sender leads for water temp, oil pressure, and tach. Heavy 8 gauge alternator leads are supplied. Power circuits are fusible link protected.
16. Color schematics and easy to understand installation instructions included.

Installation Instructions (PDF)

American Autowire (PDF)