XJC89 ...Haynes should've talked to YOU before publishing their manual on F150s!
When you re-routed/replaced your lines, did you just use rubber line, or did you use a mix of rubber and the hard lines like oem? I agree with your idea on running the [new] lines where they can be accessed/seen.
Q: (after repairs) Is there any way to know if the IWEs are actually disengaged when you're driving in 2wd? All I know is what they sound like when they are ALMOST disengaged-the grinding we all have heard while driving. ...the first time I heard that noise I thought the xmsn was about to explode!