73-79 Ford Truck Harness With Options

Currently available for:
1973–1979 Ford Trucks
 
At MrTailLight.com, we offer 3 types of Tail Light Harnesses designed specifically for your classic truck.
 
Not sure which one you need? Here’s a quick breakdown:
1. Basic Harness - Replaces wiring after your chassis plug
  (No plugs included)
2. Replacement Harness - Includes a new chassis plug connection
3. Complete Harness Kit - Includes 18’ chassis supply lead, a new chassis plug, and fuel sending unit wiring (Single/Dual)
*All harness types are also available with optional trailer wiring, including a fully integrated 4-flat and 7-round trailer plug built directly into the harness for a clean, ready-to-use setup.
 
What All Harnesses Include:
Every harness we offer starts with a solid, heavy-duty foundation—built to handle real-world use. 
All connections are soldered and sealed with heat shrink, giving you years of dependable service. 
We include triple ground wires and a clean black finish on every harness for improved reliability.
Each harness comes with all necessary installation hardware, along with a detailed harness description to make your install quick and simple.
 
Basic Harness:
Designed to replace the wiring after your factory chassis plug connection 
Your existing chassis plug must be in good, usable condition for proper installation 
Includes new tail light bulb sockets and license plate light leads 
Basic Harness replaces the majority of wiring between your tail lights
 
Basic Harness with Trailer Option:
Includes 7 integrated wires for trailer wiring, built directly into your harness 
We supply the wiring — you supply the trailer plug 
Designed to replace wiring after your factory chassis plug connection 
Your existing chassis plug must be in good, usable condition for proper installation 
Includes new tail light bulb sockets and license plate light leads 
Replaces the majority of wiring between your tail lights
 
Replacement Harness:
Our most popular option—designed to fully replace your tail light wiring harness
Designed to replace your old chassis connection with a new weather-proof chassis plug
Includes new tail light bulb sockets and chrome license plate light assemblies
This replaces the all of the wiring between your tail lights for a reliable solution
 
Replacement Harness with Trailer Option:
Includes 7 integrated wires for trailer wiring, built directly into your harness 
Includes a 4-flat / 7-round style, ready to use trailer plug, already installed in your harness!
Designed to replace your old chassis connection with a new weather-proof chassis plug
Includes new tail light bulb sockets and chrome license plate light assemblies
This replaces the all of the wiring between your tail lights for a reliable solution
 
Complete Harness:
Designed to fully replace your tail light wiring harness and chassis supply
Fully replaces your chassis supply wiring from your firewall to your tail lights
Includes a full 18’ chassis supply lead, fitting all trucks!
Include wiring for your fuel sending unit (s)
Fits both single tanks and dual/auxiliary tanks
Designed to replace your old chassis connection with a new weather-proof chassis plug
Includes new tail light bulb sockets and chrome license plate light assemblies
This replaces the all of the wiring from your firewall to your tail lights
 
Complete Harness with Trailer Option:
Includes 7 integrated wires for trailer wiring, built directly into your harness 
Includes a 4-flat / 7-round style, ready to use trailer plug, already installed in your harness!
Designed to fully replace your tail light wiring harness and chassis supply
Fully replace your chassis supply wiring from your firewall to your tail lights!
Chassis supply lead is 18’ long, fitting all trucks!
We include wiring for your fuel sending unit (s)
Fits both single tanks and dual/auxiliary tanks
Designed to replace your old chassis connection with a new weather-proof chassis plug
Includes new tail light bulb sockets and chrome license plate light assemblies
This replaces the all of the wiring from your firewall to your tail lights
 
If you have a special request for a custom made harness, contact us for details.