how can I make a 91 auto trans work with a 93 harness and tcu

[ZHebes66]

I bought a 93 tsi with no motor or tranny. I built a 6 bolt motor and put a tranny out of a 91 auto into it and got the car all together to find out that the main big connector on the tranny is different than the connector on the car. So I have a 91 auto tranny with a 93 harness and tcu and am wondering if there is any way to make it work.