Check engine light 91 GTI Mk2

I have an 1991 GTI california emissions car and cannot figure out how to read the code or codes from my car. I have a CEL that keeps coming on and 2 dual connectors under shifter boot but dont know how to wire them up to get codes.. Any and all help would be greatly appreciated..

 

Are they 2 pin connectors, rectangular in shape?
91, mk2 or mk3?
CIS, Motronic or Digifant?

 

Mk2 Digifant,, two 2 pin conncetors, 1 connector is white and one is black. Yes rectangle in shape.

 

Ok. We had the same in Dad's Audi quattro, i converted it to a newer 16 pin Obd plug.
Black plug is power and ground, ground being either black or brown wire.
Other one is the data. Which go to pin 7 and 15 on a standard newer 16 pin obd.
Made it a lot easier to read codes.
Grab a 16 pin from a later VAG car and wire it up. There's adapters available online either

https://www.ross-tech.com/vag-com/2x2.html

 

Though tbh, there's so little on these, it's probably a lambda issue.

 

Thank you so much for your help, I ordered part from Ross Tech

 

I ordered part from Ross Tech and received it. but when I plug it in and then obd2 into that adapter it says it doesn't see it and or isn't getting info from car.. Its gets power but no info.. Any ideas? Thanks Pat

 

I'm not sure tbh, i just took mine from a mk3 and wired it in myself directly

 

Hey Tristan, thanks so much for telling me about Ross Tech, I sorted out how to read code and now thinghs are all better..

 

That's great news, and thanks for reporting back!