Peter,
The sense series resistance is 180 ohms cold, and when heated by a heat gun, it shot up to 2K
http://www.99mpg.com/workshops/mikessat ... st_2.jpg,0
They seem to be thermal resetable fuses, so I suspect that a simple .6W resistor divider should work fine.
Anxious to see how you make out, as we have been talking about trying that BCM fakeout for some time.
Good Luck