Snook65,
I didn't get any directions with mine so there may be a better way, I hope there is since it is a messy underwater adventure to use it, but here is how I got it to work ...
There is a connector with a rubber o-ring on it. the small end fits (very tightly) into the vacuum hose. If you remove the intake screen the o-ring end will fit into the intake pipe. Turn it on and vacuum away.