Late 70's/Early 80's dash connectors are physically similar to the late 80's connectors for which this was designed to support. There should at least be some documentation on how a patch harness should be wired to work with the existing connections on the board.

As a part of this effort it's probably worthwhile to make an untested/unconfirmed section of the readme:

• VSS passthrough to the ECU on LH2.4/3.1 cars
• Anything to do with ABS/SRS on early 90's 2.4/3.1 cars
• Manual or automatic OD indicators (only tested with an M47)
• Probably a lot more