Brake Warning Switch Again

I would not worry about it it can just be the meter is measuring the actual brake fluid. 6Meg is almost open in your situation.
Thx...that's what I thought. If the shuttle valve in the BWS is centered, its an OPEN ckt for sure. Maybe aftermarket BWS do not center properly but positioned enough to cause an OPEN ckt to brake lamp, thus measuring continuity thru brake fluid. After market BWS supposed to be centered according to InLine.