Any body has a list of what the different wire colours are for the different components in a Mk5 Cortina harness.

Is the connection there for a rev counter? I know the 2L had a rev counter. This is a 1600 harness I am referring to.

See here for the standard bristish car wiring colour code....

http://www.fatblokeracing.org/wirecode.shtml

Doenst help with both parts of your question though, only with the first.

I have a wiring diagram here for a 2 litre, its not very good but there is a 5 pin plug going to the instrument cluster with 2 of the wires that match 2 that go to the coil, they being black/yellow fitted to pin 4 of the plug and a green fitted to pin 3.

Hope this helps

Mike