With an ammeter you are looking for Ma or A draws not resistance?I turned off everything and put an ammeter across the battery connectors and found virtually no resistance. After a few hours with the schematic and the meter, pulling connectors here & there I finally found that the black/white wire between the kill switch and the coils is shorting to ground.
If I am reading the schematic correctly the B/W wire is 12V+. If shorted it would not allow bike to start the day before and drain the battery overnight the next unless the ignition key is left on. Am I on the right track?
Someone more familiar will be along.