Re: 5.7 engine oil temperature sensor harness
You can find it here: Mopar Connection Repair Kit
. Or go to a boneyard, find something with a 5.7 or 6.1 and clip the connector and some wire, then just splice it into the harness on yours.
2015 Billet Silver
2012 300SRT, 2009 Jeep SRT, 2006 Charger SRT
Too many mods to list for each, so let's just say a lot was done over the years.