Headlight to Firewall Wiring Harness for 1966 Mustangs.Faulty wiring can be difficult to trace and very frustrating, replace yours today with this direct replacement harness. Connects headlight, parking lights, horns, voltage regulator, solenoid & plugs into alternator harness with correct color wires and factory style connectors. Connects to firewall near master cylinder and runs along driver side inner fender apron and across radiator support.
Product ReviewsWrite a review
Wiring Harness Headlight To Firewall 1966 is rated out of 5 by 3.
Rated 5 out of 5 by Angele78 from Really good product Hello, I have just received, in record time, my order for a 1966 headlight wiring harness. It is exactly what I needed. Thanks to all the team of CJ since France See you soon.
Date published: 2015-03-18
Rated 5 out of 5 by Harley D from Perfect fit This harness was perfect .my son and I installed it in 2 hrs
Date published: 2015-10-14
Rated 5 out of 5 by Bapster from Easy installation I have a 1966 Mustang Coupe. This installed easy and everything fit together great. The Two Main Disconnects pulled off easily. Because of the age of the car and several previous owners, when I got to the front right headlight, I thought I might need a special head light harness like the tail lights. This isn't the case, the harness plugs directly onto a standard three prong headlight. You will have to take of the front light panel (for screws) and the head light ring. There is sufficient openings to get the wires to feed in and get them attached to each other in the headlight areas. The bullet plugs were extremely tight however and using great care I got them together using pliers to grip them firmly as I slid them together. The hardest part about this harness was feeding the bottom wires under the radiator. Sticking my fingers in the left hole under the radiator channel, once I felt it with a finger tip, I stuck a needle nose pliers in the hole so I could grab it and pull it enough forward to get it with my finger tips. I was careful to lightly grip it with the pliers as to not damage the wiring insulation. You really should spend the extra money and also order the "engine gauge feed wire" harness that goes from the other main disconnect at the fire wall (left) to the Starter Relay, temp sensor, oil sensor and the coil as well as order the "alternator wiring" harness. These three all fit together perfectly. Otherwise, you will find yourself having to do some "do it yourself" modifications to the wires up front. The three wire harnesses took me about 2 hours 15 minutes to install, half of which time was in the dark using a flashlight. I'm glad I ordered the harnesses, I've found a lot of bad electrical work done over the years on this car and the wires are all brittle and breaking. If you need to find wiring harnesses. Google your car and they are easily found on line. I've found them extremely useful.
Date published: 2016-01-28
Does this harness include the plug for the voltage regulator and the alternator??
This includes the voltage regulator plug and the plug for the alternator harness, the alternator harness is WALT3A for a 6 cylinder and WALT3B for a 8 cylinder.
Date published: 2016-02-06
How do I receive the points you talk about? From what I have ordered in the past, I have not received any points. Thanks
You receive points on every order. However, points do expire, so if you don't redeem them in time, they disappear. You can see the amount of points you've accumulated by logging into your account from the RPM club page: https://www.cjponyparts.com/customer/account/rpmclub/. That page also shows when the next expiration date is.
Date published: 0011-11-02
With this harness, would I still need the headlight power upgrade harness, or is that basically built into this harness?
They're for two different purposes. This harness is a factory replacement for your front lights, while the headlight power upgrade harness is specifically for adding more powerful headlights.
Date published: 2015-07-06
What brand makes this harness?
This is unbranded, so it could come to us from several different manufacturers.
Date published: 2015-04-09
will this work for a GT?
It works for all 1966 Mustangs.
Date published: 2015-05-14
You Might Also Like
CJ's Low Price:$6.99
CJ's Low Price:$47.99
CJ's Low Price:$42.99
CJ's Low Price:$93.99