Help RZ250 fuel line layout!

Hey guys - after quite a while just getting round to re-connecting the fuel system to carbies on my 86 RZ250. It should be simple right, but I cant feckin remember which line goes where from the fuel pet cock and cant find a pic anywhere of it.

There are two outlets from the pet cock - a big diameter one (which I assume is the fuel line to the carbs) and a smaller diameter one - where does this go!!

Sounds kinda dumb now Ive written it down but . . . .

Cheers

 

Should be a vacuum hose which is usually connected to carb boots.

 

Trying to remember whether the vacuum line connects one of the carbs.

 

Thanks guys - still no further ahead so if you do have any brilliant ideas let me know!
Cheers

 

I use a different fuel tap on my '88 RZ so I have the vacuum line blocked, but this is where it goes.

 

Awesome, many thanks ozkaw