We just bought a haico trailer but are not able to find out the year of the trailer .Is there any way of dating it?

Hi,
If you can find the serial number, it is often coded into it and a search can often find a key to reading it. I have not ever looked for those, but have found them for many other things.
Peace,
Clarke

What digits would mean the year?

Hi,
You have not given much to go on, and I gather three things - the brand was bought, no longer made and icnnot get further off what is provided. Here is the NADA link:
RV Travel Trailers Fifth Wheels prices, specs and options at NADAguides.com
Peace,
Clarke

When u purchased trailer, u got bill of sale.

What info is on it to show u own it?

Chuck