Classic Update Wiring Harness | Ford & Bronco 1973-79
Original fuse box location. No firewall cutting. Four decades of heat cycles turn a factory harness brittle. The gremlins start small - a dash light that quits; a horn that works when it feels like it - and end with a truck you stop trusting after dark. This is the full replacement; engineered for a 1973-79 Ford truck or a 1978-79 Bronco that is keeping its original drivetrain. Carburetor; points ignition; traditional fuel injection - every circuit and every branch is built around that truck. Color coded wire with real schematics. New headlight; ignition; wiper and dimmer switches. Original style connectors where they matter; and an instrument cluster disconnect so the dash comes out without a fight. Harness lengths run long on purpose. Route it your way; trim it once; leave it looking like Ford ran it.
Install Level: Advanced
Drop-in installation in the original fuse box location with no firewall modifications.
Dual fuel tank trucks also need the 510359 dual tank add-on harness; sold separately.
Built for original drivetrains - carbureted; points ignition or traditional fuel injection. A modern EFI swap runs its own engine control harness.
Heritage Power Done Right
Your classic Ford deserves wiring that respects its original character while delivering modern dependability. This complete harness brings decades of electrical evolution to your carburetor or traditional fuel injection setup without losing the soul of your build. Clean, reliable power that honors your truck's heritage.
Built for Original Drivetrains
We didn't just update some old design – we engineered this system specifically for 73-79 Ford trucks keeping their original powerplants. Every circuit, every connector, every branch supports your carburetor, points ignition, or traditional fuel injection while eliminating the electrical gremlins that plague aging factory harnesses.
Works with:
- 1973-79 Ford Trucks – Single or dual fuel tank setups
- 1978-79 Ford Broncos – Purpose-built application
- Original Engines – Carbureted and traditional fuel injection ready
- Aftermarket Gauges – Dakota Digital, Classic Instruments, AutoMeter, VDO
- Drop-in installation – Original fuse box location, no firewall mods
Your complete kit includes:
- Color-coded wiring with detailed schematics
- New switches (headlight, ignition, wiper, dimmer)
- Original-style connectors where they matter
- Instrument cluster disconnect system
- Extended harness lengths for custom routing
- All necessary hardware and terminals
*All Classic Update Kits are currently averaging 4-5 weeks from date of order.
Vendor: American Autowire
Type: complete Classic Update wiring harness
Mounting: original fuse box location; no firewall modifications
Wire: color coded with detailed schematics
Switches included: headlight; ignition; wiper; dimmer
Connectors: original style where they matter
Instrument cluster disconnect system included
Extended harness lengths for custom routing
All necessary hardware and terminals included
Gauge compatibility: Dakota Digital; Classic Instruments; AutoMeter; VDO
Fuel system: single or dual tank; dual tank requires add-on 510359
Published lead time on this listing: 2-4 weeks. The body text states 4-5 weeks from date of order.
Listed price 1224.00 USD
Variant count: 1
No published circuit count on this listing
Built for trucks keeping an original drivetrain - carbureted; points ignition or traditional fuel injection.
Single or dual fuel tank setups. Dual tank trucks also need the 510359 add-on harness.
