Here is the diagram DC sent me yesterday. They said :
Hello Mike,
Your wiring is simple. You're going to attach the blue plug into the
charging post on the alternator and the yellow will go to L terminal as
shown in the picture here.
Maybe a noob question but how do I add a wire to the plug they included? I'm familiar with removing them and clicking them in position just not sure about waft type of wire/pin to get to add a 3rd (if needed)