I think to install the factory brake controller you also have to swap the master cylinder, because the brake controller requires brake pressure input. Non-IBC vans only have a pressure switch. I don't know if only the sender/switch can be swapped, only that when it first came out, dealers had to make the swap. Also I believe the dashboard message center is another requirement.
If that all sounds like too much work, Tuscon Brake makes a nice controller which interfaces with the CAN-BUS and provides proportional braking using the wheel speed channel. I'm considering upgrading to one, because I also want ABS on my trailer.
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2000 E450 dually V10 wagon
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