Ok let's break it down a little
Purple- starter
White - tach goes to distributor
Pink - power to distributor
Green - water coolant temp
Blue - oil pressure
Then you have three wires at the alternator
Brown - field wire
Red - power/batt
White I think - part of the connector the tie in you have looks like a factory one.
From there you have an ac harness that has various colors as well
Your green splice wire isn't factory....