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Hello and thank you for clicking on my thread and trying to help. I am in the process of trying to put a 96 351 Windsor out of a F250 without maf into a 01 ranger. The issue I'm running into is wiring. I have the main engine wiring harness still attached to the engine. I'm working on the wire harness that connects to the power distribution block that runs along the fenders and the radiator support and has one connector into the firewall. All I want is the computer and Main engine management system so my thinking is other than the ignition wires this connector that goes into the firewall all of these wires can be traced back and removed. The loose wires that you see in the photo are from the headlights and other lights. Any advice or ideas would be greatly appreciated.
That '96 F250 would have had an OBD1 EFI system in it while an 01 Ranger would be OBD2 so you need a complete OBD1 wiring harness and PCM to make this work.
That '96 F250 would have had an OBD1 EFI system in it while an 01 Ranger would be OBD2 so you need a complete OBD1 wiring harness and PCM to make this work.
I have all the wiring from the engine bay of the 96 f250 including the pcm, eec and this small Grey square with heat fins. (voltage regulator?) And how important are all of the capped off connectors?
The module in the heat sink is the TFI ignition module, along with the distributor and the PCM(EEC) these devices make the motor run. The fuse block isn't necessary but some of the EFi wiring runs through it or to it to source power. Looks like a lot of wires are cut off of the TFI moule, can you determine where they used to go? The wiring you have contains a lot of stuff you don't need, if you lay it out on the floor and remove all loom and tape you should be able to trace wires from the PCM to the engine and eliminate all the extras stuff.
Would like to clarify that I am the one who cut the wires that are cut. I started with a fresh untouched harness all the cut wires I have something to do with light circuits so I know for sure it don't need them ,but my thought process is instead of tracing back what I do need I could in theory cut all of the wires that go through the firewall then separate and keep only the ignition wires. But what you are saying is any and all wires that connects to the eec is necessary?
The fuel pump on the ranger is still connected and functional so I should be able to leave that one connected and also delete the fuel pump relay circuit out of my F250 harness?
I would also like to clarify that this Ranger has already been fitted for a 351w(carb) with a C4 attached to it show all my clearance issues are already worked out. I have a newer 351 as I sat out of a 96 F250 and I am using a m5od R2 so I will need to convert it to a manual.
What I am trying to accomplish is engine management system to run EFI and have a tuneable system via laptop.
I would like to remove all of the unnecessary wiring from the 250 harness.
Then once i have it all separated I want to take the ranger harness and remove it's engine management system and splice on my 351w system to have one harness in the engine bay. I can worry about this later.
I will be running after market guages so I'm not worried about the gauge clusters out of the 250. So in theory I don't need any wires from the cab other than ignition.
there are two connectors that goes through the firewall one holds the ECM which doesn't actually pass through the firewall it's its own box. One connects to all the wiring into the cab witch has no way to connect on to the ranger anyway. So my idea was to tsave the few wires I do need like ignition and cut the rest then trace back what I don't need.
Do I need more than just the ignition wires from that firewall connector?
Also reading back through the comments I would like to point out that there are no cut wires from the TFI it was just the way the picture is. The only cut wires so far are strictly from the light circuits like headlights.
But what you are saying is any and all wires that connects to the eec is necessary?
Yes all wires that go to the EEC are necessary, it doesn't control any lighting so you are good there but it did control the trans if that truck had an automatic. You won't need those wires with a manual trans but you still need to ID them so they can be deleted.
As far as I know my computer will work if not appently the a9l will plug right in the the harness. the cable is $60 and and most software is free with ability to donate if you want. Most of the programs were made in the early 2000s and have free pre set tunes just gotta take the time to learn all of it.
http://aldlcable.com
The website mainly talks about GM but it will work with Ford as long as you have the right software
The A9L will plug into the 1996 F250 harness, but the harness is configured for batch firing the injectors. It's a sequential injector firing setup like the Mustang A9L. There are also the differences between Speed Density (1996 harness) and Mass Air Flow (MAF). There are also other differences that are going to make this project a lot more involved.
Yes a Mustang PCM plugs right in but the pinout isn't the same, some wires have to be moved. Here is a chart showing everything needed for EFI and for a MAF conversion with a mustang PCM, truck PCMs are technically compatible with aftermarket tuners like a Moates Quarterhorse or Tweecer but most SD versions have not been memory mapped so there are no bin files for many of them. Pins shown in color have to be moved, those in grey have to be added for sequential injection and the MAF meter.
Ok so I'll have to hold of on the al9 but it'll still run off the original eec from the 250. The tuning part was more for later down the road but right now I just want to to run.
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