Interactive Art Object Using Arduino+PIR sensors, hardware and code questions

Alright

I've been reading allot, and just trying to hook the diffent parts together, i'm really a newbie, trying to read and understand the different components en how they need to be wired.

What do i want?
I need to stop, run and reverse DC Wiper motors (start current 2ah, drive current 6 ah). To control the motor i want to use a 2-channel relay for the up/down motion.

I'm using the sensor shield.

  • Run motor, use 1 channel of the relay.
  • Reverse motor, the other channel of the relay. (switching the + and - cable makes the motor turn in reverse)
  • Stopping will be done by limit switches (or just use arduino to control the stopping, dont know if that it possible.)

I created an schematic in paint, am i going in the right direction here?

Thanks!