While its even more obvious on a modern car, even a latemodel car like your 1990 mustang has tons of wires running in every direction. Efi electronic fuel injection wiring harness kits are plugandplay. These include numerous ready made harnesses on the market. Your battery, ignition, alternator, distributor, and lights all require various wiring and electrical connectors to function. What follows is a table containing the electrical modifications required to put efi into a classic mustang. Details about 1994 1995 ford mustang 5 0 efi wiring harness telorvek pdf pin on efi conversion kits pdf ba06df5 1986 mustang 5 0 carb wiring harness wiring library pdf. This is the complete front lighting harness for 1987 1990 ford mustang. Designed using stateoftheart technology and with customers in mind. Efi conversion wiring page 7 vintage mustang forums. The fox body mustang wiring harness can be chewed up by rats if the car has been sitting for a long time.
Eec iv technical documentation, from a most read guide to the inner workings of the eec iv pcm. Main harness power harness injector harness tfi harness important wiring dos and donts an efi system depends heavily on being supplied a clean and constant voltage source. These kits are designed to work with 8893 mass air 5. The dash harness is the same from 8789 on all models, but the engine harness is specific to the 89. The painless wire harness is designed for the fuse block to be mounted near the factory fuse block location. Manufactured with factory correct connectors and terminals, quality crosslink automotive grade wire and high temp covering. Ford performance mustang multiport efi wiring harness m12071. It has the ac compressor harness extended off the front drivers corner bottom right, the o2 sensor and oil level sensor harness extending off the front passengers corner bottom left, extends out of picture, the computer connection and interior.
The 89 harness can be used in place of the stock 8788 harness for anyone looking to do a mass air conversion. Mustang wiring, fuel injection, and eec information, use the information at your own risk. The following components, offered separately by your local ford dealer, can be used to support this ford efi wiring harness. Painless performance products, llc 2501 ludelle street. After visiting our store mustang lovers find we also have the best selection of mustang parts, great prices and top notch service. Wire harness installation instructions for installing. This kit is a direct fit for ford massair sequential fuelinjection setups and allows bronco owners to bring their old rigs into the modern world of efi using components primarily from 8693 mustangs. This section of harness connects the two oxygen sensors and oil pressure sending unit to the main harness. Ill assume that you already have a place to mount your eec and that youve already cut a hole in the firewall for the harness.
This is our stand alone fuel injection harness sized exclusively for early broncos using ford efi components. Ford celebrated the 25th anniversary of the mustang with a small pony on the passenger side of the dash. Ford efi injector wiring conversion bank firing to independently fired figure a. With the ez efi system making the engine management calls, we saw horsepower rise from 317 to 328 at the wheels, and torque increased slightly as well, going from 378 lbft to 382. A good exercise is to lay out the wire harness on the floor beside your mustang and identify all the sections. This is a basic tbi harness for all engines using ecm 1227747 and 1228746 type ecmmany others can be used. Basic connections are standard but it is easy to customize one for your needs. Before performing any wiring work on your ford mustang 5. Extended length wires on some circuits even allows you to utilize some. Universal efimaf harness perfect for 302351 swap engine harness 2. Its a lot to take in, but there really are not many connections to your car.
Someone told me that i need to ground the tanlight green and connect the green wire from the holley. This product is made of highquality materials to serve you for years to come. Here we have ford wiring diagrams and related pages. You will want to route the harness through and around open areas. The wires are topquality fire resistant, and are printed with the name of the sensor or terminal they connect to, are equipped with the correct ford connections and correct length wires, and each kit comes complete with easy to understand instructions. This fuel injection harness will allow you to install a 19891993 fuel injected ford 5. It even has enough wire to hide the computer in the trunk. The ford racing multiport efi wiring harness is a direct fit replacement for 19861993 302 h. Typically, technical support is limited to the customer with only a harness purchase due to the complexity of variables we have no control over. With the ezefi system making the engine management calls, we saw horsepower rise from 317 to 328 at the wheels, and torque increased slightly as well, going from 378 lbft to 382. I found them helpful when merging a generic street rod harness gm based with stock ford switches and the efi harness. This matches factory dimensions for easy, troublefree installation.
Mustang efi harness conversion series 2 video 1 assessing donor. Painless performance extra long engine conversion harness for use on 19861995 5. Rewiring an 8993 mustang harness is easily overcome in an afternoon if you pick this computer. Located near charlotte, nc our focus is foxes and we know them better than anyone. I wired the green wire to the tanlight green wire that goes under the hood and leads to the fuel pump relay under the drivers seat. This is the complete front lighting harness for 19871990 ford mustang. So im doing a dominator setup in my 1990 mustang and ive been working on getting the loose wires on the main harness wired in. Get a new fox body mustang wiring harness from late model restoration and replace that damaged harness. Ford mustang enthusiasts come to us looking to buy top quality mustang part online.
Extended length wires on some circuits even allows you to. Maf theory and facts, from here are some facts and information to help you better understand the use and function of the maf system. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The made in mexico label on the main efi harness, this should be near the large rubber grommet on the passenger side firewall. It is designed to plug into the original ford body harness or aftermarket body harness with 3 wires. The harness includes oem diagnostic port for 19941995 mustang.
Download mustang 5 0 wiring harnes connection free files. Use a support approximately every 6 inches unless the harness routes under the floor carpet. Pdf mustang 5 0 wiring harnes connection free files. These semifinished harnesses come with enough high. Included in the kit is an easy to connect 3 bar map sensor. Multiport efi engine management wiring harness m12071a50. Mustang 5 0 efi wire harness 02 sensor wire harness v8 pdf rjm harness efi conversion vss connection and pigtail pdf sema 20 ron francis wiring introduces fox body 5 0l pdf. There are several options regarding wiring your efi computer to your new 5. Multiport efi engine management harness e302 or m12071h302 package see figure 1, page 5 5.
Requires the use of a pcm from a 19891993 high output 5. Mustang diagrams fuse identification, wiring schematics. Mustangs plus has been your classic mustang and restomod headquarters since 1981, as one of the top places to buy mustang parts online. We offer brand new reproduction parts as well as nos new old stock and even some good used parts. The harness can be used with long tube headers or stock exhaust manifolds.
This yellow label is found on the o2 sensor harness, after the connector on the passenger side fender apron. You will have to wire the fuel pump, fuel pump inertia switch, and fuel pump relay, the o 2 sensor relay, the vss sensor, the clutch switch circuit, and the run. This harness is based on the 1993 ford mustang setup and is designed to be a. The more circuits and the more complications, such as efi, audio systems, etc. If you want to put a ford in a ford, this is the harness for you. I have a hard time trusting color because from what im reading the 1990 is a specific harness and some of the wire colors have either faded or very hard to see. Mustang automatic and manual transmission information. Ford motorsports, ron francis, ez wiring, fordfuelinjection, windsorfox, ron morris, and painless are just a few of the names that come to mind. All of the adapters, listed in the manual, are included in the wiring kit. Harness does not include any emissions or automatic. The next schematic diagram will be showing you the eec wiring diagram of the 1990 ford mustang 5.
Get your 19791993 mustang wired up the right way with late model restorations fox body wiring harnesses. Painless also has some pretty good manuals for their 6570 mustang harness. The unit also comes loaded with a base tune for a stock 5. See ignition wiring diagrams at the end of this manual for more information. Awesome color wiring diagram, by tmoss, for the 8891. The detail zone offers efi wiring for your cobra replicas, hot rods, and street rods.
Mustang wiring harnesses electrical wiring harness dallas mustang order mustang parts online. This is a typical 19891993 mustang efi engine compartment wiring harness. Harness comes complete with factory connectors, terminals, color coded wire and plugs directly into the factory ecm. The part number label for the main efi harness, it goes next to the silver made in mexico label. Wire harness installation instructions painless performance.
Ford performance mustang multiport efi wiring harness m. It has the ac compressor harness extended off the front drivers corner bottom right, the o2 sensor and oil level sensor harness extending off the front passengers corner bottom left, extends out of picture, the computer connection and interior green wiring connector left. Fast ezefi install and setup the easy way to efi muscle. Wire harness installation instructions painless wiring. Our new harnesses are available for 196570 mustangs and are purposely built to fit 302 and 351 fuel injected ho motors within the engine compartments of the mustang. Mustang efi harness conversion series 2 video 3 youtube. When the engine is properly fit with the correct size injectors and maf meter, the engine can run properly without the need for a costly dyno tune. Sep 23, 20 universal efi maf harness perfect for 302351 swap engine harness 2.
Mustang 02 sensor harness, manual transmission, extended 9193. The 7up mustang convertible, is a favorite among collectors. It can be used with 5 speed, aodewiring included when used or any noncomputer controlled transmission typically installed behind this motor. Painless performance products efi wiring harness 19861995 ford 5. But if you take your time and plan out the locations of all the wires before cutting anything, your wiring project will look and function great.
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