After upgrading to a lithium battery and a new charge controller, I'm finding that my existing solar panel can't quite keep up with my usage. The current panel is a 160W Zamp, which was installed on the Fleet when it was new in 2017. For some reason I never seem to get more than about 55W out of it, according to the Victron charge controller. I have a new 300W panel, which should be more than I really need, but it was free and it'll fit between the roof vents so it seems like a good bet for the set-and-forget setup I'm working on. I think mounting the panel should be pretty straight forward if I just unscrew and re-use the angle aluminum mounts for the old panel. My only question is whether the stock wiring will be sufficient for the current from a 300W panel. I'm not sure what wire gauge the run from the roof to the charge controller is, or how long it is. I know that from the charge controller to the battery is all good.