Whitnel
Gold Member
I would replace your trailer plug and truck plug before buying a new brake controler or at least clean them. I had a problem with no trailer brakes once. Figured the controler had went bad and got a new one. Replace the controler and still no brakes. I then started testing. Had power at the brake wire before the truck plug but not at the plug itself. Turns out the terminal inside the truck hook up had rusted in two. Replaced the guts and everything was good.