it'll look something like this:
with pipe threads on one end and it will accept a rubber hose on the other. drill the right size hole, then thread the hole for the proper thread pitch. be sure to use a hose clamp to keep the hose on, make sure there is enough slack in the hose so that it won't bind when the suspension is at maximum droop, and make sure it is properly secured and not flapping around in the breeze. I attached mine to my flexible brake hose. Where you route it is all up to you, but the goal is that water can't ever get to the open end of the hose. I ran mine all the way to the engine compartment but that's not necessary. Oh, and I used a clear tubing with the thinking being that if anything was inside the tube, I could see it. But that didn't last long as the tube is now hopelessly dirty and I'm not sure I'd be able to tell one way or the other.