Looking to replace some wiring and have some questions.

Dash to headlight harness C5TZ-14290-A
This only runs to headlights, directionals, and horns?

Dash to engine C5TZ-14398-H
Does this terminate at the starter relay?
Alternator harness plugs into this?
Where does the voltage regulator plug in?

The schematic in the MPC is horrible for this model truck!

 

I should know this since I just ripped the entire harness out of my 65. But since it was already hacked and mangled I didn't pay close attention.

The light/horn harness is just that, the other one is everything else. I could be wrong, but I think the engine harness and alternator harness are separate, but they interconnect near the starter relay. Of the four wires to the regulator, only one of them connects to the engine harness (the one for the "I" terminal).

The alternator harness is simple. "A" on the regulator to battery positive, either the hot post on the alternator or the hot side of the starter relay. "F" to "FLD" on the alternator, "S" to "STA" on the alternator, and "I" to the engine harness, where it goes through the indicator light and ultimately to the key switch.

Which wires are you replacing?

-Robert

 

are you in need of these harnesses...are you wanting NOS or a good unhacked original ??? I have a few harnesses...


- cs65

 

Prefer NOS, but will take anything. Let me know what you have.

Thanks,
Ken

 

I have a headlight harness for sure...I will look for what engine harnesses I have...Just so I am clear...as far as the engine harness, which components does it plug into or connect to ??? Where is this harness routed on the engine/engine comp't ??
Which engine is in your truck and which alternator and voltage regulator.
The alternator choices are Autolite or Leece-Neville...I have yet to see a L/N on a 65 or 6...but the parts book says they are/were out there...

As for NOS...you are outta luck...Ive been looking for years...I got one tail light harness earlier this year and I saw an alternator harness last year...that sucker went really crazy on the bidding...

- cs65

 

I just ordered an alternator harness from NPD for a '65 8 cylinder. How much of a difference can there be for a 6 cylinder? Bought a harness on Ebay, but it ended up being junk. My headlight harness looks ok, but the engine harness has been trashed. Behind the instrument panel looks scary too! One step at a time...

 

there can be alot as the harnesses varied depending on alternator amperage and alternator make...as for 6 and 8 cyl...the wire length/location of clips,tees etc would vary a bit.

Are you still interested in the headlight harness I have ??? Let me know...


- cs65

 

Until recently, was not aware NPD offered wire harnesses, if anything like the reproduction harness for the 64-67 Ford trucks by Mr. Mustang inc. you will not be disappointed, very good quality, same wire color codes and connectors, matter of unplugging the old and plug in the new. Have not found repro. dash harness ended up disassembling the original and made the necessary repairs then used harness tape to rewrap.

 

I just got my Alternator/voltage Regulator harness from NPD Yesterday. Was made by Classic Mustangs. Quality/Material looked just like original. All plugs, caps, and connectors. I'll install this weekend. NPD seems to now be selling various sections of the harness, but not a complete kit.

 

Since Mustangs use the same alternators and voltage regulator the trucks used, the alternator wiring loom will work, tho it may have to be spliced into the trucks wire harness.

Mustangs also use the same starter relay, oil and water temp sending units, horn relay, and every other electrical device under the hood, so the Mustang engine gauge feed loom can also be used.

The Mustangs headlamp loom is the same, but shorter. The plugs for the headlamps and park lights are identical.

All these Mustang wiring looms have been reproduced, and can be spliced into the trucks existing main harness.

My truck was rewired in 1981 using these same Mustang looms.

F250GH: Where are you getting these part numbers from? One is invalid, one has been replaced.

It's: C5TZ14290G, not an A / C5TZ14398H was replaced by C5TZ14398BZ.

It's tough enough locating obsolete parts, but when the part number is invalid, it's impossible.

 

Just to clarify, the harness you purchased was made by Mr. Mustang, but it is not a Mustang harness, it is truck-specific... Besides having a different connector reg-side, the Mustang harness is not long enough to make the stretch/span in a truck.

Considering that we're big in Mustang parts as well, here's a rule of thumb in our catalog. When a part # starts with "F-", it is a truck-specific part. If it has NO prefix whatsoever and begins with the Ford base-number, it is shared with our Mustang catalog.

Thanks guys, and Merry Christmas!!

 

The tag on the bag said f-100, so I would guess it was specific for the truck.

 

It's been several years since I purchased the harness, took pic's of harnesses before installing but can't seem to locate them, will make another attempt later. Posting the price list fax'd by Mr. Mustang, Inc. not sure if still in bussiness, and may be change in price list. Unfortunately, have not been able to locate pic's taken before installing the harness, somewhere in my computer and will try and locate.

<a href="http://s300.photobucket.com/albums/nn25/goatfarmer_photos/?action=view&current=MrMustangF100wireharness.jpg" target="_blank"><img src="http://i300.photobucket.com/albums/nn25/goatfarmer_photos/MrMustangF100wireharness.jpg" border="0" alt="Photobucket"></a>

 

Turns out the harness C5TZ14398BZ is for an F350 with C/M, (C/M ??) It is totally different from C5TZ14398H. Guess I'll keep searching, or sacrifice a reproduction Mustang harness.

 

Yes, I know that that's what Ford replaced the harness with.

What trans do you have, a C4 Cruise-O-Matic..correct?

The F350's with 240's & 300's used C4 Cruise-O-Matics on some, MX Cruise-O-Matics on others.

The harness doesn't specify which Cruise-O-Matic was used, which means it was used with all of them.

This harness runs from the dash loom on the drivers side across the firewall, then along the passenger side fender apron...with wires feeding off to the: wiper motor, stoplight switch, horn relay, starter solenoid, voltage regulator and other stuff.

Which of these parts are different from any other 1965/66 F100/350?

None...and the same parts were also used on all the cars. The wiper motor isn't same as the cars, but the plug attaches the same way.

One thing Ford does to muddy the waters is replace 10's of 1000's of part numbers every year.

Ford also made a packaging change in the late 1980's...when they did that, they changed EVERY part numbers suffix. Over 100,000 part numbers dating before 1980 were changed, long after the last editions of any pre 1980's parts catalogs were printed.

Before posting one single part number, or searching for it, I have to verify that the part number is/was the latest number available.

Otherwise, it's a waste of time...because if the part number was updated....the original number is prolly long gone from anyone's inventory.

In order to verify part numbers, I have every Ford OSI (Obsolete-Supercede-Interchange) Catalog from 1948 thru 1991, and can go to the in-house Ford dealer parts locating system to update numbers after 1991.

If I didn't have these references, I'd be SOL.

Peeps think it's a snap looking up all this scheiss. Considering all the time and effort it takes, they are wrong, it's a lotta work.

If I didn't enjoy doing it...I wouldn't bother...it's a thankless task at best.