Step 3.3: Change the wiring
Originally posted by ACR
3- Swap the transmission range switch (TRS) You don't have the choice to use the 2001 TRS. They made a new design that is 0.063in biger than the old one, so if you use the one you will get an oil leak. You must keep the output and input sensor from the old transmission because they changed the connectors. They changed them because sometimes this type of connector was loosing signal from the sensor. The temp sensor that is located in the TRS seems to be similar because the lockup engages at the same temp after a cold start than it used to do before.
I didn't really understand what he was talking about here until I looked at the plugs, and wires. Sometime mid-year in 1999, the Transmission Range Sensor (TRS) was changed. The reasons for this are known to Chrysler and Chrysler only, (although people have theorized that the plug they went to is more reliable). This change is tricky, and involves soldering the new TRS to the old wiring harness. BE SURE TO SEAL THE SOLDERED WIRES. I used heat shrink tubing, and some of the silicone based sealant. (I sealed the ends of the heat shrink). ACR mentions something about the Transmission Speed sensors having different plugs. The 2003 transmission that I got have THE SAME sensor plugs that my í96 transmission had. I was able to plug them right in. If yours are different, you will have to cut and swap the plugs on yours, OR, just bring your old sensors over to the new transmission.
GET THE WIRES RIGHT. Download this
for some assistance in matching up colors. (I got this from Argus I think). This is
a link to a web version of the document
There is a Splice Kit that you can buy that will help you accomplish this task. Goto your parts counter at your local mopar dealer and ask for P/N: 5014474AA.
I DO NOT think this comes with an extra connecton for the 2002-2004 trannies.. so don't count on that.
Here is the procedure I used:
Remove both wiring harnesses entirely from each transmission.
Cut the TRS sensor off the new transmissionís wiring harness. Stagger the cuts, so that you donít end up with a big bundle of solder joints.
Install the OLD wiring harness on the new transmission. You may need to bring over your Speed sensors on the transmission, I didnít. They plugged right in.
Sit down, locate the wiring bundle that leads to the old TRS plug. The locations of the wires on the new harness MATCH the locations of the wires on the old harness. The colors of most of the wires are the same, but some have changed slightly.. so you canít go off of wire color only. Start with a corner of the plug, and cut the first wire in the corner. Solder the NEW TRS plug to the wire in the harness you just cut. Make sure you have the heat shrink tubing on the wires BEFORE you solder them.
If you happened to get a 2002-2004 transmission, you are MISSING a wire. You will have to run to the dodge dealer, and pick up a terminal for your plug. The part number for this terminal is: 4687767
. The dealer I went to had this terminal in stock, so it shouldn't be too big of a deal to find one. To install this terminal, you have to take the plug partially apart. It is 2 clips on the black cap on the end, and it just pulls apart. If you have any questions, PM me, and I will try to help you.
The new harness should now just plug right in.
This is my OLD harness
This is my NEW harness. Note the missing wire in the corner, where the old plug had a wire. (Both are missing pin 8, in the middle of the bottom row).
These are plug definitaitons.
This is a layout (it is helpful.. but kinda confusing)
This is a pin/Color DEFINIATION. USE THIS.. it is VERY helpful. the wire colors that are listed as "1998 LH" are the same colors that are on the new plug for all 2G LH vehicles.