If you wire in series you'll double the voltage (17v to 34v) and burn out your solar controller (max 30v). Wiring in parallel will double the amperage (8a to 16a) but that's ok since the controller can handle up to 25amps.
Positive to positive, negative to negative.
Is this what can be done? I'm having only one panel installed and if it works great in Wisconsin I might add another. I want to be able to connect positive from one panel to positive of second, then neg to neg, without adding another set of wires to inside of van.
Speaker photo, but same idea.
thx for advice to newbie.