Originally Posted by Tourist in MSN

Good point on grounding.

He said he is using an SP hub. I also used a SP hub in my light setup in the photo above in post number 4. SP hub is not grounded to the frame.

I ran one wire from the hub to one light, grounded both lights to the shared steel bracket (the bracket was part of my circuit), the other wire back to the hub was from the other light. Thus, I grounded the mid point in my circuit. Not sure what the OPs plan is however, he or she should be careful how they ground it.

And the taillight might complicate grounding, some are and some are not grounded.