kyallop

First of all hello to everyone, I am new to this and will probably annoy most of you as I am sure this has been covered before. I I am in the middle of an engine swap, I have a 1.4s (75hp) and am looking to swap for what I believe to be a (100hp) 1.4 sport engine, this is out of my friends car and was a second engine to him so don't know much about it... Went to fit it yesterday to get it all hooked up (on my origional ecu) didn't fire no spark, then went to switch his ecu to find out it is totally different, so would I be able to just switch out the engine loom of his car (100hp engine) if so how do I go about doing this? Where does the loom go to? Thanks in advance Kyle