The CURT is out of stock everywhere I've looked, so I got the Tekonsha version of it from Amazon
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 .
It's the one that cautions it will work only with incandescent but reviewers say they have had good luck with LEDs on the towed vehicle. So, for $30 I'll try it.