attached is a picture of what I call the overflow hose from the gas tank of our 89 Barth. It is a 5/8" diameter hose that comes from the gas tank to the fill door. I always called it an overflow hose because if you got to much gas in the tank it would burble up through the smaller 5/8" hose. It might also be there to let air in the tank escape when you're filling up the tank. But this one has arms like an octopus. Anyone ever seen anything like this and what the heck it means?

Wow. Never seen anythng like that!

In the first place that garden hose has no place in any fuel system. It looks like those might be one way siphon break valves to allow air out but that layout is truly bizarre.

A vent from tank to filler neck is desirable to prevent burping fuel while filling. A single vent line is usually adequate.

And one of them drips right on the exhaust pipe

That is really strange

Hi,
It do not think these are "overflow" devices. I think these are inlet vents, for the emissions control system. There should be an intake manifold vacuum source near the carburetor or throttle body, connected perhaps to some solenoids or a canister, near the front of the rig. I imagine that each of the three devices is set up with a one way valve, to allow air in, but nothing out. There are 3, perhaps, in case of failure of 1 or 2. Nothing should be leaking out.

The vacuum source at the front of the rig should be the starting point of a vacuum line going to the fuel tank. The vacuum system is set up to clear out the fumes of the fuel from the tank, and send those to be burned with the intake air.

Let me know if anything in my "guess" is right!

happy motoring,
Matt