The 4x4 system consists of just two lines , from firewall solenoids to front axle actuator. One being Blue , they other Pink. If the dealership no longer sells these (hard to believe), then it's a salvage yard item.
Have you looked for the part by name ? - 4x4 Vacuum Harness.
Yea, honestly, I've NEVER seen 1/8 plastic hardline offered by a re-seller. - Just the rubber which isn't sufficient IMO, - not for a total run anyway. You can find them at the bone yard, just check them before purchase to make sure they're not brittle. That happens with age, but chances are, you'll find a good set fairly easily.
Last edited by jbrew; 05-14-2011 at 04:15 PM.