UPDATE 2-22-12 Wiring Differences between 94 MTX and 93 ATX dash harnesses

[boat]

EDIT: Fixed! See post 17. Funny how we over-react to things that are really, really simple.

Extremely ****** right now.

Back in November bought a 94 MTX dash harness from a member on here and he either didn't notice that there had been an alarm when he pulled the harness or he didn't notice it. Whatever. I am not mad at him as, I am more ****** that I bought the harness to fix the one in my blue 94, only to find the one I bought is more jacked up than the one I have.

Well enough ranting, I have to fix this problem.

I am doing a black interior swap mainly for the rationale that the harness was screwed in the dash, so, a black dash to go in its place with good wiring. Plus the interior overall is not in the best of shape either.

Someone did the fog light mod and it went wrong. In the headlight switch plug, the brown with white stripe wire is burned apart, as the butt splice melted. All other wires are spliced in the same way. It may be faster to fix this, but this plug also looked as if it melted some as well.

So, onto my question. What differences are there in the 94 MTX dash harness over the 93 ATX dash harness? I know the windsheild wiper motor is different, but what else is? The black dash to go in is a 93 ATX dash with the harness still in it. I would like to try to use it if I could.

 

[boat]

After chilling out, I have done a little research. I found wiring diagrams for 93 and 94 Taurus models. I have found one key difference is that the 93 ATX harness won't have the clutch start wiring that goes to a connector around the clutch pedal. And it would almost be a bigger nightmare to splice the 94 MTX body to the 93 ATX dash harness together, as well as under the hood. If it was a 93 MTX harness, it might be a different story.

I think I am going to fix the harness I have in the car. Find another plug for headlight switch and solder it together into my current harness then cover the solder connections in heatshrink tubing. Hopefully this works. Running out of time.

 

[Phoenix]

I know theres quite a few changes thats been made , specially on the dash harness where it goes out in the engine bay (near the air filter) to plug in with the rest of the engine bay harnesses (big plug).

The ATX and MTX where that big plug is , is not even the same , and the wires are not in the same place.

Better check that out.

 

[Racer X]

There are significant differences between the two harnesses.

I just went through this with my ATX -> MTX swap, unless you're in the mood to splice every last wire at the C101 on the fender to a compatible connector, find an MTX harness.

 

[boat]

Would a 93 MTX harness work at the C100 - C101 connector? So, a 93 MTX dash harness to a 94 MTX underhood harness, would that be a 94 MTX C100 to a 93 MTX C101?

I am told that the between the 93 and 94 dash harnesses, that both are the same as far as plugging into the 5 a-pillar plugs.

EDIT: I know I would have to come up with a 93 wiper motor as those plugs are different from the single 94 plug for the wiper motor.

 

[Racer X]

I think the C100 (101? The big one at the fender in front of the strut tower) changed in 1994, a 1993 MTX won't work. They're physically different.

 

[boat]

Man, this is frustrating. Why did ford have to do all of these little changes between years? There are enough of "slight" changes that between 92-95, none of them are completely backwards compatible with the other in the dash to under the hood wiring. Sucks.

Its like this:
92's don't have the 5th plug at the a-pillar and the c100 connector is different than 93-95.

93's and 94's a-pillar plugs are the same, but the c100 plugs are different between the 2 years, then factor in if it is atx or mtx. Then they changed the wiper motor between 93 - 94. And the AC from R12 to R134a, from 93-94 respectively.

95 is different at the a-pillar in the order of wiring populated in 2 of the 5 plugs, not sure if the c100 connector is the same as a 94 or not.

 

[mrecoolgar]

I have a 1993 ATX harness.
However, it did have a dealer added Fors alarm.
Other than that the harness is excellent.

 

[Racer X]

Kev, he needs a 1994 MTX harness.

 

[boat]

That is what I have currently in the black dash that is going in. Haven't taken it out yet. But about to hack the headlight switch plug off of it and solder it to the current harness in my blue 94. Thanks, tho.

I have a 1993 ATX harness.
However, it did have a dealer added Fors alarm.
Other than that the harness is excellent.

 

[Shovert]

Maybe this link has the plug connection you need. Maurice
http://www.spautoparts.com/pigtails.htm

 

[boat]

I already have what I need for a replacement plug. Thanks.

Maybe this link has the plug connection you need. Maurice
http://www.spautoparts.com/pigtails.htm

 

[Racer X]

What was wrong with your original dash harness?

 

[boat]

Fog light mod gone wrong. I think that someone didn't cap off the red wire they cut from the fog light switch, touched something metal and caused the brown with the white strip, which is the parking/running light constant power, this wire burned apart and melted the butt splice. All of the other wires are spliced in the same way at the headlight switch. This plug is a little melted. I think this has been replaced before, it is not gray, it is a white plug that is in the car. Kinda makes me a little suspicious there is more going on I don't know about.

In the 93 ATX dash harness I have, I am probably going to cut off the good wiring and headlight switch plug, get some solder, bust out the soldering iron and heatshrink, and see if I can't fix this in the car. Then test it so I am not wasting energy removing it to re-use it, if the fix is not successful.

This is why I want a new 94 MTX dash harness, but I will fix this if I have to.

What was wrong with your original dash harness?

 

[Eric VerValin]

Those headlight pigtails are an in stock item at Dimension.

 

[mrecoolgar]

D'**!

 

[boat]

Fixed my issue with the current harness and I will be re-using it in the black dash.
Don't know why I didn't just try this before, but I just twisted both ends of the brown w/white stripe wire together for testing purposes and I now have parking lights back through the headlight switch. Makes things a little easier and less expensive.

Now to fix it permanently I will solder all the connections together and cover with heat shrink.

Dash pulling commences. Yes, I am a glutton for punishment, but it will look so good when it is done.

 

[Shovert]

Can't say on the SHO. But I pulled my foxbody one 3 times. Pulling a MG Midget many many times no fun wither. Good luck with it. Maurice
Edit [Not meaning to steal a thread but who designed the computer to come out thru the dash. I pulled 3 now and isn't no fun. Or did I do it the wrong way. Maurice

 

[boat]

That is a pain. Yep, you did it the right way.

Edit [Not meaning to steal a thread but who designed the computer to come out thru the dash. I pulled 3 now and isn't no fun. Or did I do it the wrong way. Maurice