Having issues with the tail light on my '05 450x. Installed another DRC light a few months after breaking my last one. It is wired correctly, but seems to not be getting a ground on the gray wire coming from the ECU. If I touch the tail light black wire to a ground with the bike running the light comes on, and my multi meter seems to confirm that the gray wire isn't giving the ground it should. I guess whatever electrical switch is inside the ECU is dead.
Looking into it further, it seems that if this is bad, there is nothing to do except replace the ECU, or maybe install a switch to a ground wire and run the light off that, or someone somewhere said they ran it off their headlight...
I don't really want to have a switch that I must remember to turn on and off, but how would I connect it to the headlight ground? What are the possible pitfalls of this? Does anyone have any other ideas or workarounds? Something I missed or may not be thinking of?