My new Roadster has a problem with the TRS Xenon low beams. I initially thought it was just a broken bulb but that did not solve the problem - no light. Maybe the ballast or canbus adapter is broken? As far as I can tell there are three parts in sequence: 1. A black box labeled Morimoto 3Five DSP 2. A black heat sink type thing (also labeled Morimoto 3. The bulb I am tempted to go LED .... What can I do to ensure the replacement works and which of these boxes/heatsinks have to go?