On the front axle, the vent is above the CAD. (the thing attached to the passenger side between the diff and the wheel). The vent should already be extended into the engine compartment on passenger side fender near the shock tower.
The rear axle is vented from the brake distribution block on the drivers side tube between the diff and wheel. It should be vented up to the frame rail directly above the axle.
I relocated mine by using 3/8" fuel hose and ran the front one in the same spot as factory, but kept it oging all the way up to the corner above the computer.
The rear is smaller hose, but really clamoing down on the 3/8" worked for me. I ran it up to the frame rail, back to the driver side tail light, removed the taillight and pushed the tube into the space between the bed walls and tied it to a hole on the bed stake mount. Tight fit to get your hands in there, but it is dry at least. If I get water up that high,I have other problems.