[Al Skierkiewicz]

Kyle,
You would wire to a digital output but only use the black and white wires. Black to pin 3 and white to pin 2 on the Jag. The +5 volt line is not used. It appears that the jumper input on the Jag for coast and brake is either tied to +3.3 volts or power common. The data sheet for the controller chip does not seem to pull this input high so a pullup resistor (1k) from the Jag 3.3 volt pin (pin 1) to the center pin (pin 2) would likely be needed. Then simply program a digital output to be low for "brake" and high for "coast". we have used a similar method on Victors in the past but do not use Jaguars.