Would i be correct in saying that pin 12 of the ecu goes to pin 85 of the relay that triggers the enigne management light on early 3drs ?


Relay


85 - 12 ecu
86 - Mainloom switch live
87 - Mainloom engine management light
30 - Live in



Is that correct ?

 

Yes. See: http://bigturbo.co.uk/main6.htm

 

although that link confirms pin 12, it doesn't confirm the rest of the relay

is pin 12 a live switch or ground