Classic Update kits are designed for projects that require more circuits than would have been available in an original chassis harness. Each kit includes all the basics needed to rewire a vehicle from headlight to tail light, and will accommodate popular add-on items such as electronic fuel injection, aftermarket gauges and common supporting modifications. This harness includes:

• An updated ATC fuse panel and fuses, along with modern GXL wire throughout. Wire functions are labeled every 3 to 5 inches.
• Pre-built dash harness and our exclusive gauge cluster disconnect system for use with stock or aftermarket instruments.
• Engine and front light harness with extra-long leads for custom routing and updated engine and transmission combinations.
• Six-way power accessory plug can be used as a convenient power source for aftermarket accessories.
• A rear body wiring with extra-long leads for custom routing.
• 175 amp mega fuse kit with 6 gauge charge cable to support a high output charging system and internally regulated alternator.
• Original-replacement connectors, terminals and lamp sockets.¬†
• Headlight switch with 26 amp internal circuit breaker and new floor dimmer switch included.
• Steering column adapter kit can be used to mate with stock or aftermarket columns.
• Replacement ignition switch that is compatible with HEI and EFI swap

Note:

• If the 510342 Classic Update Kit is being purchased for a 1978-79 Ford Bronco, the Power Tailgate Harness 510358 add-on harness must be purchased to complete the installation.
• If the 510342 Classic Update Kit is being purchased for a 1973-79 Ford Truck with dual fuel tanks, the Dual Fuel Tank Harness 510359 add-on harness must be purchased to complete the installation.

Catalog Part #	Sub‑Catalog Part #	Description
510342	510344	1973-79 Ford Truck and 1978-79 Bronco Classic Update Kit - Gauge / Instrument Cluster Wiring Harness - 510344
510342	92970180	1973-79 Ford Truck and 1978-79 Bronco Classic Update Kit - Firewall Modification Template - 92970180
510342	510264	1973-79 Ford Truck and 1978-79 Bronco Classic Update Kit - Headlight Switch - 510264
510342	510053	1973-79 Ford Truck and 1978-79 Bronco Classic Update Kit - Ignition Switch - 510053
510342	92970179	1973-79 Ford Truck and 1978-79 Bronco Classic Update Kit - Warning and Contents Sheet - 92970179
510342	510476	Alternator and Main Power Connection Kit Instructions, Various Applications
510342	510346	1973-79 Ford Truck and 1978-79 Bronco Classic Update Kit - Bronco Wiper Switch
510342	510352	1973-79 Ford Truck and 1978-79 Bronco Classic Update Kit - Grommet and Parts Kit - 510352
510342	500042	Floor Dimmer Switch, Various Applications
510342	92970164	1973-79 Ford Truck and 1978-79 Bronco Classic Update Kit - Main Instruction Sheet - 92970164
510342	510345	1973-79 Ford Truck and 1978-79 Bronco Classic Update Kit - Rear Body Wiring Harness - 510345