Just installed an LED tail light on my 06 F4S with integrated turn signals. The left turn signal flashes very slowly, and the right won't flash at all. The brake light goes out to light the turn signal, so it's getting voltage, but it won't flash. Is this common for LED signals without installing resistors in-line? When I've done this on other bikes, not having resistors made the signals flash faster, not slower/at all.