I broke mine too some time ago.
Here's the pinout
15-Pin Connector 84 300D Turbo
believe it should be the same.
The instrument panel board is numbered as well as the plug. Once you get it lined up make reference marks to align the two parts. I used white nail polish (wife still hasn't realized it's now in my tool box
)
Once you've got it marked, I found it's a bunch easier to see the marks by looking through the windshield from outside the car when reassembling.