The OP is probably thoroughly confused now. The bottom-line here...the wiring depends on two things. The pulling vehicle, and vehicle being pulled. Since you can't do much about the pulling vehicle as has been said, the LT has separate turn/brake lights. This equates to a five wire setup (ground, left turn, right turn, brake, tail/running lights). To really make matters confusing, some refer to this 5 wire/prong arrangement as a 3 wire setup as they don't count the ground and tail/running light wires...and some refer to the other 4-wire/prong arrangement as a 2 wire setup. Confused yet?
If your trailer does not also have the same (i.e. separate turn and brake lights...which means separate bulbs for each), then you have no choice but to use a converter. As was also mentioned, you can find these at Walmart. I've used this one
and like it, because it's compact and integrates the converter into the plug itself.
One word of caution though...unless your trailer uses LED lights (which are very lower power draw), you may, as others have, experience problems with blown fuses or CAN BUS issues, unless you use a relay setup. Other have experienced no problems at all...so your mileage may vary.
Now, if the trailer also has electric brakes....then that's a whole 'nuther discussion (and wire)!
Another thing....if you choose to wire things up using a converter, then you'll need to be mindful of this should you ever buy, need to use, or borrow a different trailer...that has separate brake/turn lights. I'm just sayin'.
Have fun dude.
P.S. etrailer.com doesn't have EVERYTHING as the previous posts suggest....just the most popular trailer stuff. For example, they don't carry that 4 prong covered receptacle I linked above