Frank,

You must plug your brakes into channel 8 for this example.

In your basic menu, goto Aux-Ch and Set Channel 8 as VrD.
Goto to the end point menu andselectchannel 8. Adjust your endpoints to operate the brake valve correctly.
Goto the advance menu and select a prog. mix
Set the master as OFST
Set the slave as CH8
Set Link Off
Set the switch as SwH
Set Pos as Down
Adjust your rate in the prog mix to operate the valve correctly.

That should be it. You can verify the movements by going to the Servo screen and watching the direction. I would suggest you use only half of the slider throw because that is all you can get with the trainer switch using an offset. You will understand what I mean looking at the servo screen.

Jeremy