Originally Posted by lapeer20m
you might need to buy a fancy plug in adapter that allows the use of a vehicle with separate turn/stop lights to work with a trailer that has combined turn/stop lights. you can find such an adapter at many local wal-mart stores among other places.
I can say with almost 100% surety that this will be necessary. Spend the money to get a decent one too. The price on the converters runs from about $10 all the way on up. You don't need to get the best one, but the $10 8 amp rated unit really do tend to be junk unless the only thing you're going to pull is a small trailer with only rear tails, turns, and stops.
If you wanted to save some money and get a good piece look at the salvage yards. Foreign vehicles very typically have amber turns and the foreign companies tend to use some pretty decent quality electronics so you can maybe snag one from a wrecked vehicle for $5. If you get one by this route get the make, model, and year and I will get you wiring diagrams.