It is my understanding that the way that the B&M brake light works is by sensing the slower frequency of the AC circuit as you slow down.
I think that the Supernova sends DC to the taillight, thus not AC, so electronics that are sensing the frequency of AC are not going to work so well. And I think that there is no standlight in the Supernova taillights, the standlight capacitor is in the headlight.
If I am right, a B&M taillight would work and the standlight would work too, but the brake light won't.
Everything I wrote above is based on memory, I can't cite a reference for any of that. I have never used a Supernova. If you have a multimeter, you should be able to measure if the circuit to the taillight is AC or DC. If it is AC, then maybe the brake light would work?
I have only used AXA and B&M headlights. And those have worked with B&M, Spaninga, and XLC taillights.
