I found an old Karavan flatbed utility trailer and am currently converting it into a snowmobile trailer (2 place). Me and a friend riped all the wire off of the trailer and completely rewired it. No matter how we configure it, the lights aren't coordinated. If we hit the left blinker in the car, all the lights flash(like the hazards are on). Right blinker works fine. we wired it first from the diagram on the karavan site. Now once we think about it, they have us wiring the ground into the light. so we searched the web and found this layout.
well first you didnt say what type of plug your going to use, looked at your website and everything looks good there. your next step should be to check the tow vehicle, just to be sure it is wired right
The problem is the difference in 4 to 6 wire . Go to an auto parts store and get the converter . It wires into your car between the plug and the tail-lights .After that , no problem with older trailer wiring .
You need to buy one specific to your tow vehicle if you have a 5-wire system and one sure way to determine if you have a 5-wire system is if your rear turn signals have an amber lens. But not all 5-wire systems have amber lens on the rear turn signals so don't let that be the only determining factor. Check for yourself, or better yet, call a U-Haul center an tell them the year, make, and model of your tow vehicle and ask them if you need a converter harness. They will tell you what you need. But I am almost positive that the Chrysler Town and Country will need a converter harness.