Again guys... the EHC.
I say that these BDM bikes have bad ground issues that need attention.
(1) No hard ground back to the battery like most other VR's do
(2) the headlight ground should not run all the way back to the battery as it does and should (but can't) be grounded as close to the bucket as possible.
(3) There is about 12" of extra ground wire coiled up inside the headlight bucket that should not be there.
In the 12 volt industry, as I have done alot in all my life, owning my own shop and working for a few others. I have been doing remote car starters, car audio, alarm systems and home automation and long grounds, especially with small gauge wire and on a headlight that draws decent current, is not a good thing.