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Full Description
Item # 14401-4M
MPN # 14401-4M
Brand: American Autowire

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WIRING ASSY, Complete, Custom Updated Kit, modern fuses, correct switch connectors, perfect for custom cars with updated gauges or systems, kit requires car to have an internally regulated alternator or one wire conversion, Pertronix or electronic ignition (no points), volt meter (no amp meters)1 Correct replacement headlight switch with internal circuit breaker.2 Original Ford styled headlight switch connector.3 Headlight enhancement relays allow you to run high-powered Halogen headlights.4 Complete wiring for all running lights, brake lights and directional lights, and license lights and third brake lights.5 Separate relay controlled circuit for cars that have stock or aftermarket fog or driving lamps.6 Correct replacement ignition switch for use with your original bezel and tumbler.7 Correct original ignition switch connector.8 Standard turn signal flasher and hazard flasher mounted on fuse panel; horn relay mounted on harness.9 New ATO Fusebox fits in center of the firewall away from heater and A/C ducts and allows for easy fuse and circuit breaker accessibility.10 Harness allows for most after market accessories such as; gauge packages, heat and air conditioning systems, power windows, etc.11 All required hardware supplied.12 Original switch connector bodies! (Exclusive to American Autowire)13 Steering column connectors will plug directly into most after market steering columns.14 Directions and an adapter with terminals are included for running a stock Mustang steering column.15 Separate optional under-dash light sockets along with original dome/interior light wiring.16 Instrument Cluster wiring is designed with a cluster harness disconnect system for easy service and assembly. The best aspect of the disconnect system is that any gauge cluster package can be easily and neatly wired in. This includes AUTOMETER, CLASSIC INSTRUMENTS, DAKOTA DIGITAL, STEWART WARNER, and VDO just to name a few.17 Rear body harness assembly plugs into the main harness behind the left hand kick panel for easy accessibility and allows for original or custom routing. Rear body wiring includes backup light lead and ground wires, stop and tail light lead and ground wires with proper focal length light sockets, third brake light wire and the correct license plate lead connection for use with your stock tag lamp. Fuel tank sender wire and sending unit extension are included.18 New floor dimmer switch is provided. Wire length and connection accommodate original floor mount dimmer switch location.19 Engine wiring includes feeds for coil, tach, water temperature, oil pressure, brake warning (with later updated extension if necessary), and electronic speedometer (if necessary). A heavy gauge alternator feed wire is provided for a typical 1 wire high-powered installation.20 Front lighting includes extra long leads for special routing when custom under hood appearance is desired. All headlight, park light, fog light, and directional light leads are provided, as well as a switched trigger wire for electric fan relay (usually recommended with AC).21 Color schematics and easy to understand installation instructions included.

Manufacturer Reference #'s: 510177,

Vehicle Applications


WARNING: This product can expose you to chemicals including lead and DEHP, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to


5 Star Avg.
1 Review

100% of reviewers recommend this product.

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This is a very complete harness. Headlights to tail lights and everything in between. The wiring is very clearly labeled and there is plenty of extra wire to make sure you can route the wires where you want them. Upgrading to a 1 wire alternator is a must and I highly recommend that. Cleans up the engine bay a little bit. Also comes with extra wiring for aftermarket gauges and additional circuits. The wiring diagram that the harness comes with is easy to follow.

Submited on September 11, 2018 by

YES I would recommend this product.


5 Stars


5 Stars