This electric/hydraulic problem is not exclusive to the Jordan - it affects a number of controllers. The problem is that these controllers send either a continuous or pulsating millivolt (extremely small) signal out the blue brake wire and look for a milliamp (or even microamp) current to prove continuity between the brake wire and ground - this is how they get their signal to illuminate the "trailer connected" LED. It all depends what the electric/hydraulic trailer brake actuator does when it sees this signal - some respond and try to apply the trailer brakes; others don't.
The BrakeSmart controller claims compatability with electric/hydraulic trailer brakes, I believe.
Rusty