Griffith 500 diagnostic port?

[simonjrwinter]

After having established my engine ( it’s in a Cobra) is definitely from a Griffith 500, now it won’t start!
There is a good spark and plenty of fuel getting through (plugs are quite wet) I’m wondering if it’s a sensor? I understand these cars might not have been fitted with an OBD port when new, but the previous owner has told me something was plugged in to a “diagnostic port” when it was dyno’d 15 years ago. He’s not 100% sure. Can anybody advise?
Thank you
Simon

[softtop]

You will need to search about and find the plug, it is small, black and a maximum of three pins. In a TVR it lives in the driver's side footwell. A transplanted engine? Where is the ECU?

[Belle427]

A Chimp but much the same.
https://www.pistonheads.com/gassing/topic.asp?h=0&...

[simonjrwinter]

Thanks for the advice, I’ve ordered the rovergauge cable and cd
Love this forum, so useful.
Thanks again
Simon