I got curious so I measured mine. -- My 2011 prostar/ISX is drawing 0.653 amps everything switched off. It has been sitting for 8 days. -- Cranked right up.
great !
there is some real world intel for people that read this thread..
It might be good to know the number of Modules online in your truck
and if you have both j1780/1939 low speed / high speed CAN