Need help finding alternator connector for 1978 mercruiser-pics included

1978 mercruiser 120 hp= I have been looking for this part circled in green forever, before i rig it up i was going to see if any of you all know where i can purchase this part from. It connects to the alternator

http://i297.photobucket.com/albums/mm229/dissturbbed/003_zpsea8e5ea3.jpg

Top