Thank you for your great product and your technical assistance over the phone. I successfully converted my 1996 Yukon SLT with the OEM 100 amp CS130D on the 5.7 motor, to your 140 amp CS144 with the heavy-duty rectifier a couple of weeks ago. It works great! After I installed it my engine idle smoothed out and it even improved the off-the-line power. Before installation, the transmission was starting to slip slightly on high-speed up shifts, but that also went away! I guess the old 100 amp was just not putting out enough power for my vehicle. I did also install the supplemental ground wire you suggested from one of the rear CS144 casing mounting bolt holes to the negative battery cable.
I ran into a couple of installation issues that I would like to pass on to you so you can post it on your installation help page. I included some pictures for help, use the ones you like.