I am trying to figure out the year of my Jayco pop up camper. I got the pop up for free and was told that it is a mid-1980's but it looks more like a mid-1970's. Old cars used to have the year of make on the taillights, so I tried that and there is a "73" at the end of the number on the taillight, so I'm thinking that it could be a 1973. The exterior siding is a corrugated aluminum, if that helps identify the decade in which it was made. I looked for a VIN, and I found some numbers stamped into the a-frame of the trailer: 0801 B1180187 But, I read that the VIN is 17 digits long. Maybe I'm looking in the wrong place...? Can anyone help me with determining the year? Thanks!