[Kevin Sevcik]

I have no idea about the actual anser to your question, but when don't you control it with a relay? I'm fairly certain that would work, though not a spike relay.

I say get a miniature 5V relay, hook the coil up to the digital output, and hook the other side up to the brake/coast jumper. I'm assuming this will work, except I have no clue how much current the digital outputs can supply on the signal pins. Or even if that's how they work. IFI doesn't have much information on digital outputs on the website. The realy should work, however, as FIRST talks about using a microswith to control the brake/coast setting.