Yes I do agree that “it clearly says requires 8028” but I'm using one led light bar. Pretty sure the power supply is needed if you have multiple plugged in. Pretty sure the sport has an open ch3 so unless I'm plugging in multiple light then I don’t think I need it. I'm not buying another traxxas brand product just so I can maybe have more than one later. I already dislike tracxas markups (their batteries”) and I swapped my connecter as soon as I got it.