[Rangr50]

I need to know whether or not a 94 Mustang V6 computer wiring harness can be used for a 94 Mustang V8. I'm in need of a harness for my 94 5.0 and I have found a V6 harness on e-bay. Will this work for what I need? I have the V8 computer, injector harness, maf sensor, basically everything but the harness. Thanks for you help.

Brian

[Korean Ian]

I think they are compatible.

[Rangr50]

Anyone have a definite on this?

[Mustangdewd3.8]

To do a 3.8 to 5.0 swap I know you have to change computers ..... I dunno fi that would make them compatable. I'll have to look that up. but ford may had made them compatible to save time and money ^^ do some searching around for ya Rangr.

Here is some info.

Ford Motor Sports however FMS advised me not to use the 94-95 computer as it is a lot more refined and less aggressive compared to the earlier ones. In 89 Ford introduced the Mass Air EFI to Mustangs (88 in C.A.) and the automatic 89 computer is the most aggressive computer you can get. It was the first year for Mass Air on Mustangs and they wanted flat out performance. Since automatics were a little slower than the sticks they made the automatic computer a little more aggressive than the stick. Of course any 89-93 computer is a good choice. Just avoid the 94-95 computers if you can. If you want to use the 89 automatic computer and wiring harness with a T5 (which is what I am doing) be sure to also have the automatic O2 sensor harness. As for wiring the Mustang computer into the Rangers wiring harness ? I got the wiring harness manual on page 47 of the 98 FMS catalog. It's only five bucks and shows how to splice and connect the Mustangs wiring into another vehicles wiring. It's real simple if you have a diagram showing what each wire is for.

Looking for more on the 3.8 or 5.0.

But it looks like this 89 computer is a sweet deal.

"Also, I know a new wiring harness would be required for this ... swap from 3.8L to 5.0L HO mustang"
couldn't find this post, but it was on this forum http://www.cougarnuts.com/board/index.php

Seems like needed new wiring harness for his swap froma 3.8 to a 5.0 - dunno if it was a mustang.

In this Post.
http://www.mustangevolution.com/foru...ead.php?t=7962

It says "I have a '94 V6 and am wanting to change it to a 5.0L HO. I know I need a new computer and wiring harness for the change"

So I'm guessing the harness is different.

- And that guy prolly won't do the swap lol

Hope the info has been sufficient Rangr! good luck on finding the wiring harness for a 5.0 I'll keep an eye out for one if I come across any for a good price, I'll let ya know.

[Rangr50]

Mustangdewd3.8,
Thanks for your help. From what I'm gathering it looks like the harness from the 3.8 won't work. I just need to get my hands on the correct one. I already have the 94 computer, so I will go with that for now. I've heard that the older ones were better, but that was after I had already purchased the 94. I've been looking for the harness for over a month now. I missed a good deal on e-bay, but have been looking ever since. These seem to be hard to find. Any wrecking yard that I call in the Seattle area tells me they don't have it. Most get cut when they yank the engine out. If you have any leads on a harness I would be very glad to hear about it. You can contact me directly at brianhuisingh@hotmail.com. Again, thanks for your help.

Brian

[Mustangdewd3.8]

Originally Posted by Rangr50

Mustangdewd3.8,
Thanks for your help. From what I'm gathering it looks like the harness from the 3.8 won't work. I just need to get my hands on the correct one. I already have the 94 computer, so I will go with that for now. I've heard that the older ones were better, but that was after I had already purchased the 94. I've been looking for the harness for over a month now. I missed a good deal on e-bay, but have been looking ever since. These seem to be hard to find. Any wrecking yard that I call in the Seattle area tells me they don't have it. Most get cut when they yank the engine out. If you have any leads on a harness I would be very glad to hear about it. You can contact me directly at brianhuisingh@hotmail.com. Again, thanks for your help.

Brian

Try www.Stangparts.com they have crashed stangs, prolly can find one and request for thr 5.0 harness of one of their smashed 5.0s. I'll e-mail this to you also.

and that 94 puter will work fine, guess this ranger is going to be one sweet ride, good luck ^^

[Rangr50]

Thanks. That website looks like it might be the ticket. They did have some wrecked stangs they were parting out that fit what I need. I e-mailed them to find out if they had the harness. As far as my Ranger goes: I've had the 302 in there for over 8 years now, and yes it does quite well. My gas mileage just isn't what I want so I'm hoping the fuel injection will boost it quite a bit. It only gets about 14.5 normally. Strangely enough it gets upwards of 16.5 when I'm carrying a load. My Mustang on the other hand gets about 20 normal driving, 24-25 highway. Twice I have gotten 28 on long trips. Seems it is geared in such a way that 80+ MPH is about the optimal speed for best mileage (75MPH speed limit in AZ). The overall gearing is very close in both vehicles, so I know part of the mileage is the injection vs. carb. Anyway, if I can get the mileage up to 18 normal driving I will be very happy. Thanks again for your help.

Brian

[Tominator]

Yes, you need the correct wiring harness. Another thing to consider is the firing order might be different but that obstacle can be overcome.

Here is a great site with nearly all the info you will ever need. Ford Fuel Injection.com :thumbsup

[ashwaterman81]

i have a complete fuel injection system for a 94 gt. everything! i'm willing to trade for your carb setup.

ashwaterman81@yahoo.com