Incoming Messages

Sender	Action	What to do
	Enable/Disable the relays	enable/disable the relays
	Get relay status?	check the relay status and return them.
Center Console	Power ON:	check for battery status: over/under voltage, over/under temperature relay states: they MUST be open respond with OK if ok, respond with some error code if something's wrong.

Outgoing Messages

To	Action
Center Console	Tell it that you're online.
Battery Fault	Broadcast to the rest of the car, the battery fault.