I have installed complete second battery systems on a 2d Gen Tacoma and a 2013 Tundra. Built the trays, cut and soldered the wires, and basically built them from scratch. I just sold my Tundra and bought a new '17 Tacoma and was about to begin, yet again, a 2d battery system. Then I found Off-grid 4x4.
After looking at his website I called Matt, got the low-down and ordered my system. Also bought two new Odyssey 1500 batteries (nicely discounted from Battery Mart...Matt alerted me to their prices). Everything came on Friday and in a weekend it was done.
I need to give a big shout-out to Matt and Off-Grid for the amazing product. I've helped to keep the aftermarket alive over the years with investments in all sorts of stuff for my adventure toys. I can say without reservation that Matt's product is the most thought out and well engineered product I have purchased. Ever. The wires are exactly the correct length. The battery trays fit like a glove in both positions. The components are of the very highest quality, much borrowed from the marine industry. The instructions are clear (although hardly needed because the system is so simple and intuitive) Everything was perfect. When I encountered a small glitch this weekend and needed some advice, Matt immediately replied numerous time to my inquiries... on Sunday morning no less.
This set up is not inexpensive. It is, however, worth every penny and saved me many days of work and all the inherent frustrations of collecting parts, wire, lugs, relays, etc etc. I strongly recommend this system. Beautiful, bombproof and well engineered. 10 out of 10 stars. The combination of excellent product and fabulous customer service is rare, indeed.