Turns out, the tach/speedo/taillight fuse somehow blew over the two days when nothing was working (don't ask me how that one worked but apparently it did), so now all I have to figure out is the headlights (haven't investigated those yet). Anyway, about the RR, my battery was putting out like 13.8 V at idle and 14.5 V everywhere else (which is what I think the battery intended). That's different from what the link said, is my RR probably okay?