How did you come to the point of thinking you need to replace the regulator? Did you check out the alternator output? Is battery up to snuff. Just all questions to be answered before tossing $$$ at something. I need to go on the other PC to be sure, but I think its up front under the chin spoiler by battery.
2013 XCT added Jan 2015
pull back bars, passenger arm rests, HID Low beam, Silverstar Ultra headlight high beam,Drag Specialties Pillow Top seat with driver backrest. Glasspack mod Mufflers.
2009 Royal Star Venture-Traded Jan 2016
Trailers are for when it's broke aint it?