The symptom was that KEY ON, display would take 5 seconds to light. Dim at first then full. Press start button, display goes dead. OFF/ON and then try and turn lights on- Display goes dead. Drained battery as well. Did rear frame buss connector wire tie in, charged battery and all is well in the world of Brute Force !
Hope it helps !

 

Good observation!
BTW, above it is for gthe "IRS" verions 650i not for the "SRS" BF650 which doesn't have the rear BUSS connector.