I only tow about twice a year anymore, so when I bought my RL Sport, I cheaped out and bought an aftermarket T harness. It has worked fine but started noticing corrosion around the plug and the goofy black box. I ordered the Honda kit from handa.com. Sure it cost more, but it took about the same amount of time to install as the T harness. Plus it won't lead to any gremlins. Trailer lights are hard enough to keep working as it is.