need 1988. foxbody wiring harness, please help!!!!

Mr.PonyBoy · January 18th, 2012, 11:33 PM

Honestly, I have and 1988 5.0 hatchback lx. The only thing stopping it from running is a bad wiring harness. Its my baby and ive put alot ofwork and effort and waiting on the car and I can wait to see it onthe road

I was hoping someone out there would have a full wiring harness for the car for hopfully around 200$ or know where to find one for that price. Please help me its my first car and ive had it sence march in the shop lol

ryanw · January 18th, 2012, 11:49 PM

Wich wiring harness, theres the interior, the engine bay, wich also splits off into, injectors, o2 senors, tranny....ect.... if you need every thing, thats going to be a few bucks, but there all over ebay. I almost bought the interior harness the other day for 35 bucks, just o i could have spare wire, clips and plugs, but at the last min i passed on it.

At this point id upgrade to a mass air wiring harness if i were you

ryanw · January 18th, 2012, 11:51 PM

mustang wiring harness | eBay

Mr.PonyBoy · January 19th, 2012, 03:47 PM

If thats the case I need the one for the engine bay. I trscked down to my injectors. They have no pluse. I thought it was becuz of a bad tfi module but I got a whole new distributor, wire, plug, whole 9. So just so I learn what would be better in getting a mass air flow harness?

ryanw · January 19th, 2012, 04:02 PM

You will have to get a new computer though, if you go with the mass air, plus the mass air meter, so that does add cost to your over all budget, but in the end i think its worth it.... the mass air is better cuz it tunes it self better, which makes it easier when modding your engine. The set up you have now is finicky when you start changing cams, and heads, your system relies a lot on vacuum and when ever that changes , it makes your shit run bad. Are you sure its not your computer thats bad or the wiring leading up to the injector harness

Mr.PonyBoy · January 19th, 2012, 04:10 PM

Positive. Ive replaced the computer already and still nothing. Ive even replaced the fuel pump relay, still nothing. I know my ignition system is stright its just pretty much came down to probeing wires lol so i figure its best to get awhole new harness. Does the computer have to be new or different for it towork with mass air flow? or does it make adifference if its reman? id love to know your fox is pretty tight and and well built

Mr.PonyBoy · January 19th, 2012, 04:12 PM

And plus take in consideration the cars been sitting for about 2 years, about 1 sittin in a bay catchin dust lol

ryanw · January 19th, 2012, 04:17 PM

If just want to add the mass air conversion harness to your stock one, check out the link below

mustang mass air conversion | eBay
If you want to upgrade to a mass air computer check out the link below, but you will either need the mass air coversion harness that you just add into your stock harness or you need to get a harness from a 1989 and newer fox body thats already set up for mass air.....but this computer is for a manual trans, if you need an auto trans, i believe its an A9P
mustang ecm a9l | eBay
If you just need the injector harness check out the link below
mustang injector harness | eBay
If you need to replace just the ecm harness and stock computer and you dont want to convert to mass air check out the link below
87-88 Mustang GT Main Harness ECM PCM | eBay

Mr.PonyBoy · January 19th, 2012, 04:33 PM

Now I have another questionn. What if I were to get a harness for a 1990 1991 fox, itd still have the main components im gonna need right?. And have mass air with it? and its 5speed, no need to worry about that lol

Mr.PonyBoy · January 19th, 2012, 04:37 PM

90 91 FORD MUSTANG BODY WIRING HARNESS 5.0 302 ENGINE GT & LX HATCH | eBay

ryanw · January 19th, 2012, 04:42 PM

Originally Posted by Mr.PonyBoy

Now I have another questionn. What if I were to get a harness for a 1990 1991 fox, itd still have the main components im gonna need right?. And have mass air with it? and its 5speed, no need to worry about that lol

Yes, but youll still need the newer computer and mass air sensor,

But if you know that you computer harness is good, then it would be cheaper just to get the little add on mass air conversion harness, like in one of the links i posted.

Sorry im not trying to spend your money...lol

If your goal is just to get the car running then just buy the injector harness, thats in another link i posted

Then later on if you choose, you can covert to mass air at any time

ryanw · January 19th, 2012, 04:45 PM

Originally Posted by Mr.PonyBoy

90 91 FORD MUSTANG BODY WIRING HARNESS 5.0 302 ENGINE GT & LX HATCH | eBay

This is not the computer wiring harness... this is for every thing else, like fuse box, wipers, interior lights ect......

Mr.PonyBoy · January 19th, 2012, 04:50 PM

dont worry, if id had the money id buy everything in a heartbeat, but im broke as balls always lol. Its gonna be a future investment. In the meantime, im gonna look up on all data the wiring diagram for a 91 and a 88 and see how similar it is to double check. Id like to get the 91 harness for cheaper lol thx for your help and advice.

Mr.PonyBoy · January 19th, 2012, 04:51 PM

Ohhhh makes sence why is 100 bucks cheaper lol thx buddy.

DIYB · January 23rd, 2012, 05:58 PM

I've got a computer and wiring harness but I'm in Virginia...But we might be able to work something out e-mail me jshinault22@gmail.com

January 18th, 2012, 11:33 PM	#1
Mr.PonyBoy Newbie 1988 Mustang LX 5.0 FOX Join Date: May 2011 Location: Neptune Posts: 19 iTrader: 0 reviews	need 1988. foxbody wiring harness, please help!!!! Honestly, I have and 1988 5.0 hatchback lx. The only thing stopping it from running is a bad wiring harness. Its my baby and ive put alot ofwork and effort and waiting on the car and I can wait to see it onthe road I was hoping someone out there would have a full wiring harness for the car for hopfully around 200$ or know where to find one for that price. Please help me its my first car and ive had it sence march in the shop lol

January 18th, 2012, 11:49 PM	#2
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	Wich wiring harness, theres the interior, the engine bay, wich also splits off into, injectors, o2 senors, tranny....ect.... if you need every thing, thats going to be a few bucks, but there all over ebay. I almost bought the interior harness the other day for 35 bucks, just o i could have spare wire, clips and plugs, but at the last min i passed on it. At this point id upgrade to a mass air wiring harness if i were you __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

January 18th, 2012, 11:51 PM	#3
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	mustang wiring harness \| eBay __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

January 19th, 2012, 04:02 PM	#5
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	You will have to get a new computer though, if you go with the mass air, plus the mass air meter, so that does add cost to your over all budget, but in the end i think its worth it.... the mass air is better cuz it tunes it self better, which makes it easier when modding your engine. The set up you have now is finicky when you start changing cams, and heads, your system relies a lot on vacuum and when ever that changes , it makes your shit run bad. Are you sure its not your computer thats bad or the wiring leading up to the injector harness __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

January 19th, 2012, 04:17 PM	#8
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	If just want to add the mass air conversion harness to your stock one, check out the link below mustang mass air conversion \| eBay If you want to upgrade to a mass air computer check out the link below, but you will either need the mass air coversion harness that you just add into your stock harness or you need to get a harness from a 1989 and newer fox body thats already set up for mass air.....but this computer is for a manual trans, if you need an auto trans, i believe its an A9P mustang ecm a9l \| eBay If you just need the injector harness check out the link below mustang injector harness \| eBay If you need to replace just the ecm harness and stock computer and you dont want to convert to mass air check out the link below 87-88 Mustang GT Main Harness ECM PCM \| eBay __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

January 19th, 2012, 03:47 PM	#4
Mr.PonyBoy Newbie 1988 Mustang LX 5.0 FOX Join Date: May 2011 Location: Neptune Posts: 19 iTrader: 0 reviews	If thats the case I need the one for the engine bay. I trscked down to my injectors. They have no pluse. I thought it was becuz of a bad tfi module but I got a whole new distributor, wire, plug, whole 9. So just so I learn what would be better in getting a mass air flow harness?

January 19th, 2012, 04:10 PM	#6
Mr.PonyBoy Newbie 1988 Mustang LX 5.0 FOX Join Date: May 2011 Location: Neptune Posts: 19 iTrader: 0 reviews	Positive. Ive replaced the computer already and still nothing. Ive even replaced the fuel pump relay, still nothing. I know my ignition system is stright its just pretty much came down to probeing wires lol so i figure its best to get awhole new harness. Does the computer have to be new or different for it towork with mass air flow? or does it make adifference if its reman? id love to know your fox is pretty tight and and well built

January 19th, 2012, 04:12 PM	#7
Mr.PonyBoy Newbie 1988 Mustang LX 5.0 FOX Join Date: May 2011 Location: Neptune Posts: 19 iTrader: 0 reviews	And plus take in consideration the cars been sitting for about 2 years, about 1 sittin in a bay catchin dust lol

January 19th, 2012, 04:33 PM	#9
Mr.PonyBoy Newbie 1988 Mustang LX 5.0 FOX Join Date: May 2011 Location: Neptune Posts: 19 iTrader: 0 reviews	Now I have another questionn. What if I were to get a harness for a 1990 1991 fox, itd still have the main components im gonna need right?. And have mass air with it? and its 5speed, no need to worry about that lol

January 19th, 2012, 04:37 PM	#10
Mr.PonyBoy Newbie 1988 Mustang LX 5.0 FOX Join Date: May 2011 Location: Neptune Posts: 19 iTrader: 0 reviews	90 91 FORD MUSTANG BODY WIRING HARNESS 5.0 302 ENGINE GT & LX HATCH \| eBay

January 19th, 2012, 04:50 PM	#13
Mr.PonyBoy Newbie 1988 Mustang LX 5.0 FOX Join Date: May 2011 Location: Neptune Posts: 19 iTrader: 0 reviews	dont worry, if id had the money id buy everything in a heartbeat, but im broke as balls always lol. Its gonna be a future investment. In the meantime, im gonna look up on all data the wiring diagram for a 91 and a 88 and see how similar it is to double check. Id like to get the 91 harness for cheaper lol thx for your help and advice.

January 19th, 2012, 04:51 PM	#14
Mr.PonyBoy Newbie 1988 Mustang LX 5.0 FOX Join Date: May 2011 Location: Neptune Posts: 19 iTrader: 0 reviews	Ohhhh makes sence why is 100 bucks cheaper lol thx buddy.

January 23rd, 2012, 05:58 PM	#15
DIYB Newbie 1983 5.0 Convertible Join Date: Oct 2010 Location: Virginia Beach Posts: 10 iTrader: 0 reviews	I've got a computer and wiring harness but I'm in Virginia...But we might be able to work something out e-mail me jshinault22@gmail.com

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