Jim, sorry, not enough information to go on to give you an answer.
You need to know the kerbweight of your car, should be in the handbook, then the make and model of van, and if you have the handbook for the van, its weight should be in there.The weight you are looking for regarding the van is the MTPLM.
The nearest I can find is a 2002 2.0 SE, which has a kerbweight of 1378, and a max towing weight of 1400 kgs.
To be certain of your cars kerbweight visist this site: http://www.cuddles.abelgratis.net/honda.htm
and follow the link to ask for your vehicle info.
The caravan weight should be on a weight plate near the door, on the outside, if its a reaonably newish van.