Finally someone that did a good detailed install on a Foxbody with a Ford engine. Thank you very much! Happily subscribed!

By far the best explanation of how to install this system great job sir.

Great video, you should be sponsored by Holley! This video made my decision easy to purchase this kit thanks

Great video !! My 93 mustang gt is in my Mechanics shop right now getting this up grade and gears .. can’t wait to feel the difference with the x put in !

Thanks! Just ordered mine today!

Woah. Killer video.

Thanks for sharing! great detailed walkthrough man, Subscribed! 👍

Amazing video

Awesome video!!!!

This video made up my mind I'm getting it now

This is a great video it really explains everything and this will help me out with my engine swap thank you again.

Awesome video

More photos and a diagram here: www.holley.com/blog/post/how_to_install_a_holley_terminator_x_efi_system_on_a_foxbody_mustang/

Nice info. I just may have to consider ditching my old PMS InterACQ system for this.

This is the BEST DAMN OVERVIEW of how to install the Terminator X. Holley needs to pay you to put their logo on this video and link it from their website.

this is perfect, im looking to possibly install the terminator x on my 88, this was very helpful, thank you

Hopefully you make a video of A/C installation soon ! Thank you for all the information and tips !

U deserve more subs bro. U got mine👍🏽

Awesome ...... Video ty for your help ... my guy !!! can hardle wait to get mine installed ... on a 1989 347 Stroker Supercharged and 175 shot NOS ...

Very very informative, thanks

Really good video . thank you

Awesome, thanks for the video

I wish you covered the timing like how to turn off timing to set base timing and then enable the static timing to make shore the Holley is in sync with balancer and distributor

Very well done!

Great video

Really nice video thanks

Awesome sauce. Thank u!!!!

For the guys out there where the fuel pump relay is in the passenger side fender, the connector with the red wire that triggers the fuel pump may or may not exist. There's a green plug with a green wire in the passer side kick panel with a yellow stripe that splices out to three. Those three wires trigger the fuel pump. You can connect the green wire from the Holley kit to one of the spliced green wires with the yellow stripe and it will work. Although the Termi X harness already has a relay I still wired in another 40 amp relay just for peace of mind.

My dream interior I have grey at the moment

Well done thank you

Nice! Subbed

Nice!

Good video thanks

My 86. Ugh such a fun headache . Trick flow upper . Kit then mad conversion now car barely want to turn on

Thanks spooln272

@2:03 The plastic cover does not have to be removed. Simply pull the relay, ground terminal & plugs through first and the 60 pin connector will come through last.

Excellent vid! One of the best I've seen re: the fox body. I assume the holley system does not control emissions/egr? Thanks.

You can also see detailed photos and a digram in the current issue of Mustang Hub Magazine: www.wesduenkel.com/published/2020/7/21/holley-terminator-x-for-fox-body-mustang-technical-article

Awesome video! So you were able to completely remove the original engine computer? It doesnt control the AC or any other functions like that? I just pulled my stock engine out and am getting ready add the Terminator and need to go through the stock harness and keep my airbags, lights, AC stuff, etc. I'm doing it on a SN95 with the 5.0

In the instructions holley specifically says power and ground directly to battery for main power and ground.

You can type the numbers in that cubic inches box instead of going one at a time. Just push the box.

On the Holley screen U can click on the number to type it in so you don’t have to scroll

@7:35 DO NOT ATTACH THE RED BATTERY POSITIVE LEAD ANYWHERE EXCEPT THE BATTERY! DIRECT TO THE BATTERY, NOT TO A STARTER SOLENOID, NOT TO A JUNCTION/DISTRIBUTION POST DIRECTLY TO THE BATTERY! Follow the Holley instructions, they are there for a reason. Attaching the main power leads anywhere but the battery is asking for problems. MOUNT THE MAIN POWER LEADS DIRECTLY TO THE BATTERY!

Great vid I jus did the install on my fox I'm still trying to figure out how to hook it up to my laptop

Nice 👍

Can you explain more on how you connected your oil pressure and coolant temp to the stock gauges.

Great video !! Only small thing is.... holley says like 12 times in the instructions that the main power needs to goto the battery positive and battery negative DIRECTLY ON THE BATTERY. I hope you never find out how touchy these holley ECU’s are, but I’m shocked no one has mentioned it. For anyone using this as a guide, put the main power/grounds DIRECTLY on the battery. Again, really awesome you took the time to post this to help everyone :)

Great Vid Wes. I was wondering and maybe I missed something but did you fully remove your stock ECU, and if so are all of your stock gauges working based on the couple wiring tricks you showed with the Oil sensor etc... How did you wire up your airbags to work? Did you use the AUX inputs/outputs in the TermX? Thanks in advance, Subbed!

A week late for me but vert well done. 👍

WOW that was 10x easier than my Holley I got 3 yrs ago for my mustang.

You have a new subscriber in SLC Utah. This is the best detailed video on doing this install!!!! I have a 1996 F1 50 with a 302 engine I just built can I run this system on my truck?

im stumped with the 8 pin green plug(rectangle) beside the ecu. and the 8 pin by the alternator(round black) that goes down the front of the engine . the f kit was discontinued so a had to order the regular kit ..... appreciate any insight you can provide!

Great video tnks for the info! Question tho, the fuel relay must stay in place in order for the fuel pump to work?

Great details! Have you integrated the ac system if so how? I'm looking into that option

In your video I dont see where you had any issues getting the IAC working yet I see that others had to use a noid light and change the PWM parameters to getting theirs working...Did your stock 2 wire IAC work without any extra fiddling?? Seeings those carpets emit alot of static discharge in the winter Im interested in how mounting the ECU under the seat is gonna work out..

Very detailed, love it. Been watching a ton of your videos the last few days. What did you do for the gauges? I was under the impression that factory gauges would not work with a Termi x set up? Or maybe that was just in my 97 cobra?

Can you come install it in my boosted LX....great video

Can somebody please tell me if the 92-97 4r70w harness connector labeled as “OSS/VSS” in the manual connector plugs into the “OSS” sensor or “VSS” sensor. If in the “VSS” sensor can someone please tell me if it matters how many teeth the plastic driven gear needs. I’ve plugged into both and both have vehicle speed readings not at close to actually speed

Can you explain how you connected the oil pressure connector on the new harness to the stock oil sending unit ?

I'm confused on the green wire for the fuel pump without bypassing it threw c216 what wire on the stock fuel pump relay do I tap it into it's on a 91 gt as well

Do you end up removing the wiring that goes to the ignition coil? Does Holley provide that side of the harness? I couldn’t tell by the video. I ordered mine and I’m just trying to prepare myself so when I get mine in, even though it’s on back order so who knows when I’ll get it.

Awesome video! Does the Holley only have three different injector sizes? Jw I have 60lbs

I don’t have the brownish plug I have a grey one and a black one and from the research I did only the 92-93 fox body have that

I just installed the holy terminator X in my 88 mustang what settings should I use for the ford performance 24lb injectors and I’m not sure what settings to use for the cam I have a b303 cam shaft

I’m debating on getting the kit I have a 1986 thunderbird with the 5.0 in it right now it’s speed density but I have the mass airflow harness to change it to mass air but I was going to make it a strip car so I wanted to get away from the old computer and get a nice upgrade instead of just getting a a9l computer what would need I have to do to make it work it’s basically a fox

I have it wired similar to yours but I'm not getting spark at the coil. Coil + wire (red/green) to red/green at connector and negative - green wire to tan wire spliced into the white wire. Just cranks no start

Did you move the o2 sensor to holleys recommended orientation. My sensors point up 1990 and Holley says down for condensation. Installing mine soon, been waiting on shipping.

I just ordered mine for my 89 if I’m not using the factory dash how would I wire the Holley terminator to the factory ignition coil?

I'm installing mine now. I think I noticed that the coil connects to the solenoid. If I saw that right, does it start connected to the solenoid and I just splice into the wires?

Very helpful, What did you do for your A/C system and relays?

I would love to know if this would work on my 1994 F150 5.0L. I am praying it will!!! ANY INFO would be highly appreciated. GREAT VIDEO and now i am a new subscriber. God Bless

How did you connect the alternator for it to charge also did you connect the A/C compressor.

I heard you need to buy a separate wiring kit to keep your factory A/C. What did you do? Does your A/C still work?

Great vid imfo,...Sold stock harness before i can get wires out. What other options do i have. Im running on3 turbo

I know this is old but I can’t find any information. Hopefully you will get this. How do you still run a factory radiator fan with the terminator x installed?

Great video - thank you for posting it! Did I see this correctly - does the Holley Terminator system use the Mass Air sensor? If not, wouldn't that make it a speed density system?

Do you have part numbers for the sensors you had to buy to make this work I’m installing the harness currently

curious.. i didnt see options for 60 # injectors . MSD, or larger MAF?

Good Video guys thanks new Subscriber here 💪🇺🇸🔧👍🚘🔴🦊🔥

For anyone who needs more help with the wiring, here's a diagram: www.dropbox.com/s/p8e4hsq9ohuqbhy/014-holley-terminator-x-foxbody-mustang-install.jpg?dl=0

Hi, so you connected the 12v switched Red/Green from the C110 plug wire to the Red/White Holley wire? Thanks!

what did you do for volleys fuel pressure sensor? just leave it unplugged?

Hello there sir and great video BTW but I'm unsure about one part...how to retain and wire oem coil. Old harness is out and followed the wires coming from the coil. I see how the neg side goes to tfi and main harness and 110 conn so just run tfi wire to white wire on holley and cut the other and plug the 110 in? Pos goes to 110, 2 wires to tfi and 1 to a relay by kick panel. How do I wire it to get spark? And I assume keep the inline fuse with it with the grounds that are close by??

I'm getting ready to install mine this weekend I watched your video couple times and I read the instruction manual a couple times it says if you want to keep your OEM coil that you need to get a relay and it says how to wire it did you have to do that to keep your OEM coil... Looks like in your video you just ran a couple wires from the coil...I even bought a coil pigtail cause I want to keep my factory harness so I can sell it

Such as did you just splice the wire to the connector

Hey question on the Oz sensor do you read one or two

i am in the middle of installing my holley terminator x max, i’m stuck. I watching the video which helped my question is i have the green wire that is for the fuel pump wired to the fuel pump at the relay under my front seat, i’m unclear on where to pick up my 12v switched wire from. and it looks like since i’m basically using a factory style coil i also need to get a relay and power the + side of my coil, why did you connect the green wire for fuel pump in the kick plate?

Stupid question, is the factory ecu used at all, or is it completely replaced by the terminator-x system?

Great vid! Regarding the blue vacuum line...What the heck is a quick-turn adapter and where do I get one?

Great video, are you still happy with it?

Is the IAC pigtail part of the terminator x harness ?

Will this work with 42lb injectors? I have the Bosch green top 42lb I didnt see it on the list when you were setting up the system. Thanks

I'm regards to the switched power source. Did you run the coil positive back to same wire the red and white is spliced to? Or did you use two different wires?

My million dollar question after all this!!will the tfi module on the distributor still over heat and leave you strained??

Don’t have a fox but an f150 would it be almost the same?

How different is this instal from a Holley hp efi I have that I need to install

What’s the difference, does it run better, more power? Faster? I have a stock 89 GT,

Great video! How does it run and start after you have had it on for a few weeks?

How long did it take you to install? Thinking about doing this to my 92 gt!!

Hey man I have a couple questions for you if you don’t mind. I plan on doing this to a 1989 mustang. It was a four cylinder, but I plan on putting a 1994 5.0 mustang engine it it as well as the auto trans it was mated to from ford. my first question is will the terminator max work with this transmission? I know you have a terminator x, but I don’t think it’s to different from the max. it’s a 4r70w I think. I could be wrong. my second question is will the terminator work with a newer 5.0 engine into a 88 fox? I know you bypassed the salt and pepper injector connectors, but the 94 didn’t have them as far as I know. and I’m not to sure of the other connectors I might need to make custom. I have most of the engine wiring harnesses, as well as the old ecm from the 94 mustang. The only problem is that the 94 was an auto and for some reason had a manual ecm. Which is strange. I’m kinda new to fox body’s and Holley. so I am very very confused about what I need to do. Thanks!