Is their a obd 1 adaptor for a obd 2 plug?

Yes, there are OBD-I to OBD-II adapters available that allow vehicles equipped with OBD-I systems to connect to OBD-II diagnostic tools. These adapters typically convert the communication protocols between the two systems, enabling diagnostics. However, compatibility may vary based on the specific vehicle model and year, so it's important to check the adapter specifications before purchasing.