Grady, that's a HUGE bit of information! On behalf of everyone here, thank you, thank you.
I find this design to be bizarre in the extreme. A "failsafe" mode that puts you into 4WD? Wouldn't it be more logical to
require vacuum to put you into the "abnormal" 4WD?
Ah well, I'm not an "automotive engineer" and what do I know?
- Jack