[Jeff McCune]

Originally Posted by The Lucas

I have had the same problem. However, I dont believe the aliases are wrong but rather the LEDs are incorrect. Red now means the M+ is at 12v (M- gnd) and Green means M- is at 12V (M+ gnd). I say this beacause I am using a single solenoid which is spring return, so I only power M+, which the red wire of the solenoid is hooked up to. I simply toggle that relay's fwd bit to operate the solenoid and it works. I would not go changing the polarity of your compressor because reverse polarity could seriously damage it.

I haven't hooked up a multimeter to the relays yet, but I'm almost 100% postive you're incorrect about this. If this were true, it would imply that the robot controller not only tells the relay what polarity to set itself to, but what color to light the LED to. This would require 4 bits of information to represent, and we're attaching the relay to the controller with 2 signal wires. I seriously dobt they implemented a serial communication protocol between the controller and relay.

The claim you made holds some incredibly serious implications... You might want to back such claims up in the future, because even though I'm sure you're wrong, I'm going to have to test this myself because it's not worth blowing out components a week before ship.