McDaddy has 2 Brake Controllers in his 4wd !!! WTF is going on ? !

Typically a car or 4wd would have one Electric Brake controller BUT Mcdaddy has TWO ..2 Brake Controllers. WTF ... What on Earth is going on here? Technical Glitch?? Custom Mod ?? or something entirely different. How does this work? What is the Reason for this?? Let us show you
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