Wiring Harness Help

M

malikaimiller08

Member

Aug 28, 2024

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Illinois

Dec 22, 2024

#1

• Dec 22, 2024

• #1

I am putting a 5.0 from a 91 Thunderbird in a 93 mustang that was originally 2.3. Will the thunderbird wiring harness work with the mustang or do I have to get a specific mustang harness? I'm not fond of wiring, and I'd rather spend a little more money than have to deal with alot of wiring issues. I'm on a budget since I am a 16yo in school who works part time. Thanks!

 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

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#2

• Dec 22, 2024

• #2

I've moved over to the [General Talk] section. Way more experts on this body in here.

Funds are tight, I get it. Here's what I would do [today] in this situation:

Buy an aftermarket self-learning ECU and harness from a company like Holley. There are better experts than me that can recommend specific systems.


Here's why:

32 year old harnesses and ECUs.


You use what wiring is necessary with factory or factory style sensors.

 

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General karthief

wonder how much it would cost to ship you a pair

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#3

• Dec 23, 2024

• #3

If you're not into dealing with wiring, I know I don't like wiring issues, then you need to find a wiring harness from a 92-3 V8 mustang, noobz made an excellent suggestion, aftermarket system will provide everything you need and instructions too, I'd do that.
Does the mustang run and drive?

 

Mustang5L5

That is…until I whipped out my Bissell

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#4

• Dec 23, 2024

• #4

The harnesses changed almost every year in the Mustang. A 1991 Mustang engine harness won't work with a 1993 Mustang because of changes such as connectors being different, and the relocation of the fuel pump relay and a few other misc wires. Would almost guarantee a 1991 tbird harness won't work.

I believe with 1993, you will want a late 1992-1993 Mustang engine harness with the fuel pump relay relocated under the hood. Expect to pay quite a bit for these.

You'll also want to probably change the accessories and intake setup from the T-bird to the 86-93 mustang specific setup. Hate to say you but this swap is going to nickel and dime you.

 

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Mcmahst

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#5

• Dec 23, 2024

• #5

Just a thought: would you consider a carb swap instead of the EFI? I know that’s a simpler thing to do verses a wiring/sensor swap. Just another option to consider. Good luck, we were all 16 at one time.

 

General karthief

wonder how much it would cost to ship you a pair

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#6

• Dec 23, 2024

• #6

Mcmahst said:

Just a thought: would you consider a carb swap instead of the EFI?

Click to expand...

BITE YO TONGUE!!!!
actually for a person this age and lack of experience this is a major undertaking either way

 

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limp

wrap a little cheese around it and its a done

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#7

• Dec 24, 2024

• #7

 

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