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I was looking for a way to use my old harness and retain the 5.4 L pressure control solenoid, and decided to modify my harness to work. It was simple only taking about 30 min to do and seemed easier than trimming the shift solenoid and the TCC solenoid connectors, along with repinning the harness. I cut the connector off the 03 harness, drilled the metal tabs out of the square holes.

Then i removed the leads from the connector on the 94 harness, and put them into the 03 connector. I think i will put a lil jb weld on the top of the leads to prevent arching between the two. JB weld is good to 500 degrees constant temp and doesnt conduct so it should be ok. Not sure if anyone can use this but Figured id contribute something since ive learned alot here.







 

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Awesome, I have done similar myself a couple of times in instances where I couldn't get the end useer to change the wiring on their car for whatever reason.

But, for most, the whole point is that the new electronics are a better setup. Then, think of this. I could have repinned that harness on the car in less than 5 minutes and using no parts. It's super simple and completely reversible. With that you get the added benefit of getting rid of the wire setup inside that has been a fairly regular cause of issues, and you get to use a better setup across the board internally.

Like I said, I have done it myself when that is the choice I am left with, but I assure you that I use the newer setup in absolutely any instance that I can. It's just better.

Good work though considering that is obviously the route you chose.

Darrin
 

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Great pix & nice writeup - It's my understanding ford went BACK to the wire setup & deleted the printed Boards in some of their latest Trannys.
 

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It's my understanding ford went BACK to the wire setup & deleted the printed Boards in some of their latest Trannys.
Because that board in the 4R70W is so much better, I can only see that happening in the instance of an issue with cost or with packaging where the solenoids are too far apart on other transmissions to allow it to be economical. From the time they introduced the board into the 4R70W, it was there until the end of their run.

Face it, how many of those old wired setups have we seen with cracked, brittle and swollen wires or that are leaking fluid through the case connector. And then there is the issue of the connector ends becoming brittle and the holding tabs breaking off.

On the other hand, in all of these specific transmissions that I have dealt with, I have never seen a single issue out of the board setup.

Yes, they are that much better in my opinion.

But, some may like wires and that's fine. I am not one of them however. I have had too many issues with them. On top of that, Ford has discontinued the wire setup and it's getting darn hard to find the stuff nowadays for those times you have to use it.

Darrin
 
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