Howdy, my name is Steve. Let me preface by telling you up front that, 1), I am brand new to solar powered tinkering, and, B), I have almost no electronics expertise, so please respond using Sesame Street terminology. I bought two of the HF 45 watt kits to use with our camper and would like to "tie" them together to produce a, theoretical, 90 watts. Even though I got the newer controllers with the USB receptacle, digital readout, etc, it's my understanding that I can't use one of them for all six panels. Can you recommend an inexpensive controller that will allow me to hook both kits together for a 90 watt system? I kinda like the 3, 5, 6, 9, & 12 watt plug-ins so if there's a controller out there that has those, that would be cool. Also, any other improvements I could make, (heavier gage wiring??), to improve overall performance without getting too deep into it. I mean, I'm a real handy, jack-of-all-trades, kinda guy so following installation instructions or basic wiring instructions isn't a huge problem, but I know nothing about electrical theory or schematics or grown-up stuff like that. Thanks for your time and trouble, and go ahead and take the rest of the day off!! Steve