I would find a 1993/94 2.3l Ranger automatic computer to use with current 1993 engine/manual trans wiring harness
You just need to add 2 wires to computer for the 2 solenoids in the A4LD
You will need to pin them in the 60 pin connector, but not that hard to do
You can by-pass the current clutch pedal Neutral switch or run 2 new wires from it to the A4LDs Neutral switch, so starter motor can't be used unless transmission is in Park or Neutral, a safety thing
Your current manual trans has a Reverse light switch to activate backup tail lights, should have a purple wire and a Black/pink stripe wire
Purple wire has 12volts with Key On
Black/pink wire runs to tail light bulbs
The A4LD will have a 3 wire solenoid plug-in just in front of the shifter, get the 3 wire plug for that with wires attached so you can splice them to new wires
The center wire needs 12v key on.....................................like reverse lights purple wire has, so perfect, wire is already there, and no solenoids are used in Reverse on the A4LD so no issues with amp draw on the wire, it can run both solenoids and backup lights when needed
A4LD has its Neutral switch(NSS) just above shifter, its a plunger type switch, has 4 terminals, and has two switches inside
One switch connects 2 of the terminals together when trans is in Park or Neutral, for starter activation
Other switch connects the other 2 terminals together when trans is in Reverse, activates reverse lights
Get the connector for this with the transmission, so you have wires to splice to
You already have both wires for reverse lights there from manual trans switch, they just need to be added to the NSS
The other 2 wires can be run from current clutch switch to NSS, thats up to you if you want that safety switch working
If you have never install an automatic transmission then you need to know ONE THING that is EXTREMELY IMPORTANT
You MUST SEAT the torque converter inside the bell housing BEFORE putting transmission on the engine
This requires rotating the torque converter while pushing it in, it will slide in at least 2 times some times 3 times as it lines up with pump and splines inside trans
Torque converter should be fully inside the bell housing when its SEATED, it slides forward a bit to bolt to Flexplate
Failure to do this WILL ruin the transmission, no do overs, FULL REBUILD required
Don't forget the automatic trans Radiator and transmission lines, these are required
And always a good idea to change the rear main seal when you can, i.e. transmission is off the engine