Last summer we bought an 83 Vanguard 17' fiver thinking we could pull it with our Ranger V6, didn't work as well as hoped so the tv issue was dealt with but that is another story.
The trailer had been neglected, we kept finding glitches that needed to be addressed. Spent considerable time dealing with electrical issues but that was to be expected. The 12 volt didn't work, the seller assured us it had a relatively new battery. Found said battery hooked up backwards (the knucklehead) and dry. New battery solved that problem. Still need to run a new feed to the right side tail light.
Pulled the water tank to replace the frozen drain valve then couldn't get the city water fill line to seal. A tube of sealant entered the fray.
Fridge had gone south so got another my sister had removed from her class C in favor of a larger one. It got stubborn but after we freed the gas valve and cleaned the pilot it seems to work reasonably well.
Toilet valve leaked so replaced the unit, no parts available and I saw no point in spending a lot of time on it. Bathroom fan went on vacation, that is a future project.
Door would not close one day, the bottom trim had come loose. Found the bottom of the wood frame rotted out. I got ambitious this weekend, removed the door and dissected it. Replaced the bottom and both sides, the biggest issue was finding someone with a table saw to rip the 2x2s. A liberal dollop of Elmer's glue, some screws to replace the staples and we are back in business.
The floor feels a little spongy and there is some rot under the water tank but if we get another two or three years out of it we are happy. Then it's time for a newer larger one to retire in. The $200 throne is the biggest expense, we don't have over $500 over the purchase price in it not counting my labor. Basic hand tools plus some nice evenings and Saturdays (no garage), a few trips to H-D and the rv dealer, and we have a very serviceable trailer that we get a lot of pleasure from. Posted this to encourage others to get their hands a little dirty and dive into a project like this, it has been very rewarding.