I'll throw in a recommendation on this one....
https://www.etrailer.com/Brake-Contr...s/HM47297.html
You can put the controls where you can easily see AND reach them. I had it on my last truck and really liked it. Now it's in my brothers truck as my new truck has a built in controller. If I were to buy another, I buy the Hopkins In-Sight again without question.