fiesta mk2 1.7 puma conversion
 

I have a 1L mk2 fiesta which I have restored from a rust bucket over the past year which was ok for me as I am a panel beater/painter. the gasket went in the engine so I decided it was time to move the conversion plans forward. I decided on the 1.7 puma engine as it was different and 130 brake standard. engine is in radiator the lot. next step is the electrics. I have the pumas barrel, ecu and engine loom. how do I connect it to my wiring inside the car to get the temp gauge and stuff to work? I have cut out its original engine loom but kept it handy incase it was needed. can anyone help please.