I have been going through this for quite a while. 96 harness might work for you, but you will have to change the solenoid harness connector and it has extra wiring for the tail shaft speed sensor, and they might be pinned differently. I’m currently still working on this.
The original wiring harnesses that I found were in pretty bad shape, even if they look decent, when you start pulling wires away from each other there are lots of bare, crusty spots. The stock exhaust wasn’t far from the plug locations.
The best I have found to getting a new harness is to use the US Shift web site to identify the 2 connectors on your transmission (they both changed 93-96). Or see the guide attached
Then call US Shift and order the 2 connectors, the plugs come with about 10 ft of new wire connected. You can then basically rebuild your harness using only your square 14 pin from your old harness, if you have one. If not you can buy a NOS for $50 or so. This is best choice because you pin new wiring, no splices.
I have called US Shift many times and The same guy has always always answered. He is very helpful, patient, and knowledgeable. I think his name is Kevin.
If you don’t already have the newer version of the analog range sensor you will want to upgrade it. The old version had water intrusion problems. In the picture old is on top new is on bottom.
No need to try to use the newer digital range sensor. I talked to Stinger about this.
Here’s a full wiring diagram that I found
Early Solenoid Connector
View attachment 102969
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