And here is a farely updated parts list for everything.
Parts Required:
1997 PCM
The code doesn’t really matter, just got to make sure it’s a 97
1996-2001 EEC-V PCM Connector (104 pin)
Note: Ideally, get the same connector that the PCM you will use came from. Get as much of the electrical pigtail as possible. But if you can’t, any EEC-V connector will work, just some re-pinning will be in order as well as some wire colors may be different. GO BY PIN NUMBER!
1997 5R55E Transmission
It has to be 97 because in 98, a couple of sensors got deleted that the 97 PCM
needs to shift.
1997 5R55E Transmission Harness
This has also got to be from a 97 for said sensors.
OBD-II Data Link Connector
This is the trapezoid shaped connector located under the dash of all OBD-II vehicles. It will have seven wires, but only six will be needed. Get as much of the electrical pigtail as possible
A4LD Shift Cable Bracket
Use can use the old one and attach this to the 5R55E transmission to flip the shifter cable 180 degrees.
A4LD Dipstick Tube & Stick
You will reuse the dipstick tube from the A4LD and attach it to the 5R55E, because the 5R55E is much longer
Transmission Control Switch
In its most basic form, it’s a momentary switch with a light. This mimics the O/D OFF button located on the drive selector of 95-01 Explorers. Ideally, you want the second gen stalk and wire the button in and mount the light as you please. But a simple momentary contact switch will work. But this is needed in any fashion for the PCM
Parts Optional, but recommend:
Rotunda Monitor Adapter Harness, part number 007-00081
This is an extension harness designed for the EEC-IV computer systems. If you want a truly plug and setup, I highly recommend finding one and buying it. When you splice all your engine sensors, you can simply do it in this harness and plug everything in when your ready. It’s not needed, but if you don’t get it, you will have to sit in the truck in the lower cab corner, and splice everything in that small space. Not Fun.
Connectors C113 and C118
These are the male electrical connectors that plug into the 5R transmission harness. These will need to be cut off the engine harness.
A4LD Neutral Safety Switch
This is the round 5 pin switch that is installed in the A4LD and has the round female connector that attaches to it. This is what is used to integrate all the safety switch functions of the 5R DTR Sensor and moves it to the first gen harness.
A4LD Valve Body Electrical Harness
This is used to connect to the ignition power source already running down to the transmission to the 5r solenoids and sensors. Also you use this harness to attach the resistors to the A4LD 3-4 and TCC solenoid wires to prevent MIL’s.
Second Gen Gear Selection Display
I have not hooked this up yet, but I am sure it can be modified to work. The first gen gear selector has P R N OD D 2 1, where as the second gen has P R N D 2 1 so the the 5R will not line up correctly. If this doesn’t bother you, skip this part. If it does, find a way to modify it.
Assorted Factory male/female electrical connectors
You can’t have too many of these. These are useful when attaching different harnesses together and for future use when you need to remove or disconnect something.