American Autowire Classic Update Kit for 1959-60 Chevy Impala

The American Autowire Classic Update Kit for the 1959-60 Chevy Impala is built for projects that need modern electrical reliability and support for upgrades like electronic fuel injection, high-output alternators, aftermarket gauges, and added circuits. This kit uses an updated ATC fuse panel and automotive-grade GXL wiring for improved durability. All wires are labelled every several inches, making installation and debugging simpler. Key circuits support 12V accessories, and extra-long harness leads allow you to adjust the routing for custom builds. Factory-style connectors ensure proper electrical contacts, while a 175A megafuse and 6-gauge charge cable offer improved charging support and system protection. The dash harness is pre-built for quick installation and includes a gauge-cluster disconnect for easy compatibility with OEM or aftermarket instruments. Switches for the headlight, ignition (HEI/EFI compatible), and dimmer are included for a complete replacement. This kit allows the addition of modern power accessories through a six-way plug and supports late-model steering columns and electric speedometer connections. It is not for use with factory ammeters and works best with high-output alternators.

KEY SPECIFICATIONS

- Vehicle: 1959-60 Chevy Impala, all body styles
- Part Number: 510217
- ATC-style updated fuse panel
- GXL automotive-grade wire
- Labeled wires every 3–5 inches
- Pre-built dash harness with modular instrument cluster disconnect
- Original-style connectors and lamp sockets
- 6-gauge charge cable and 175A megafuse kit
- Includes headlight, ignition, and dimmer switches
- Not compatible with factory ammeter
- Supports 12V and high-amperage accessories
- Designed for use with high-output alternators (100A or higher recommended)

INSTALLATION SUMMARY

You’ll need to disconnect the battery and use proper terminal crimping tools for reliable connections. Installation starts with the dash harness and then moves to the instrument cluster, engine, front light, rear body, and accessory harnesses, following the labelled bag order in the instructions. Harnesses have extra length for flexible routing, and a template is included for modifying the firewall for the new fuse panel location. Soldering terminals is recommended except on pre-crimped factory-style connectors. All factory heater systems and aftermarket AC setups are supported, but an additional harness is required for the original factory AC. Grounds must be connected from the battery to the engine, body, and frame, and all kit content should be checked before starting.

FACTORY FIT NOTES

- Designed for modified vehicles, not stock restoration
- Fits all 1959-60 Chevy Impala sedans, hardtops, and convertibles
- Allows use of late-model steering columns and aftermarket gauges
- Not for use with factory ammeter or original AC harness (AC harness not included)
- The ignition switch is not cosmetically identical to the original; minor dash filing may be required
- Not returnable after opening or installation, so verify parts before starting
- Extra-long wires can be trimmed to fit custom or original routing as needed
- Best used with a high-output alternator; low-output factory alternators are not recommended