Painless Wiring Harness Ford Universal 14-Circuit 1966-1976

Painless Performance: 10123
MSRP: $1059.95
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Painless Wiring Harness Ford Universal 14-Circuit 1966-1976
Painless Wiring Harness Ford Universal 14-Circuit 1966-1976 Painless Wiring Harness Ford Universal 14-Circuit 1966-1976 Painless Wiring Harness Ford Universal 14-Circuit 1966-1976 Painless Wiring Harness Ford Universal 14-Circuit 1966-1976
Painless Performance

Product Description

Painless Universal Ford 14-Circuit Wiring Harness for 1966-1976 Mustangs.

Features Ford OEM color codes and Painless' unique covered micro-fuse block. Harness also features an auxiliary circuit with 20 amp relay for accessories such as fog lights, electric seats, electric window/lock or an electric fuel pump.

This harness includes circuits for:
Headlight Switch - Power to headlight switch. Power wires out of headlight switch to head light dimmer switch, tail lights, dash lights and park lights.
Dimmer Switch - Wires include power from headlight switch and power out to low and high beam headlights.
Wiper Switch - Power to wiper switch.
Turn Signal Switch - Power into and out of your column mounted turn signal switch. This harness kit includes new terminals for the turn signal switch. You must retain the factory connector.
Ignition Switch - Power into and out of to fuse block (ignition, crank and accessory)
Brake Switch - Power into and out of brake switch.
Courtesy Lights - Power and ground circuits for dome light activation.
Alternator - Charge wire and alternator field activation wires from regulator (connector included). Most alternators can easily be wired up to this Painless harness. Included in kit is a high output alternator wire that allows you to use up to a 140 Amp alternator.
Horn - 20 Amp horn relay mounted to fuse block
Radio - Harness includes constant B+ (for preset memory) and ignition hot circuits for any aftermarket or factory radio.
Starter - Crank signal wire for starter solenoid.
Engine Section - wires including electric choke, coil power, coil to tach signal, oil pressure, engine temperature, and A/C compressor clutch control wire.
Headlight Section - Wires including right and left high and low beam headlights, turn signals and park lights. This harness kit includes six two-pin molded rubber connectors to replace the factory park and turn lights inline connectors.
Tail Section - Wires including tail lights, brake lights, turn signal lights, fuel gauge sender, third brake light, and reverse lights.
Dash Panel Section - Wires including fuel, temperature, oil pressure, voltage, tachometer, speedometer, high beam and turn indicators and gauge illumination.

Also included in kit:
-Fuse block mounting bracket
-Rubber grommet
-4" zip ties
-70 Amp maxi fuse
-Large assortment of crimp style connectors.
Most important of all we provide an illustrated installation manual that equips you with the needed information to install the harness to your vehicle.

Will NOT fit Thunderbirds.

Fits Ford Galaxies
Fits Ford LTDs
Fits Ford Falcons
Fits Ford Fairlanes
Fits Ford Mavericks
Fits Ford Torinos
Fits Ford Rancheros

Similar Mustang Parts

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Installation Instructions

Mustang Installation

Mustang Applications

This product will fit the following Ford Mustang years:

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Product Questions


I have a 1966 Mustang coup w/factory A/C but just a base car other wise. Will this 14 circuit harness work as well as the Painless Performance 22 circuit #20120?

Asked by: Tommytub81
Yes, it'll work.
Answered by: CJ Pony Parts
Date published: 2015-09-08

Hi there do you know if this fits a f100 1966 , if not do you have one and how much , 

Asked by: mike L J
No clue. We do hope to be adding more F-100 parts in the future, so we will certainly have something soon.
Answered by: CJ Pony Parts
Date published: 2015-08-05

will this work on a 73', convertiable,  302, 3 speed manual, mach 1 gauges. i was looking at the painless 21 circuit which is based off this. so im guessing if this fits the 21 circuit will fit as well.

Asked by: samplebridge
Yes, this works on all 1966-1976 Mustangs.
Answered by: CJ Pony Parts
Date published: 2015-08-03

Will this harness work for a 1971 mach 1 351C?

Asked by: susan85
Yes, it will.
Answered by: CJ Pony Parts
Date published: 2015-07-07

Does this kit work with my stock tach on a 69 mustang? 

Asked by: ovidoman
Yes, it's an OEM style wiring harness, so it will work with the stock instrument cluster.
Answered by: CJ Pony Parts
Date published: 2015-02-26

Hi, I'm doing a restomod 67 Fastback (5.0 with 140 amp alt, late model ignition), looking for complete wiring harness that it's the easiest to install. Any advice? Is this kit includes everything I'll need? Thanks

Asked by: Marcpil74
I think you're going to want something more like this: I'm pretty sure the '65 version of this product is what we used in Project 50/30, which is a restomod. Check out the video and the details - I suspect this is more what you want.
Answered by: CJ Pony Parts
Date published: 2015-02-25

I am building a 66 mustang convertible restomod will this kit work with an amp gauge and a single pole altinator? I haven't located a replacement voltage gauge to replace my amp gauge and I have already secured a new instrument bezel.

Asked by: nealb
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