Nokia Hands free CARK91 wiring

I know this might be a bit off the topic but was wondering it anyone could help with the abbreviations found on the side of the box for the power connection cable p/n PCH-4J, supplied with a Nokia hands free car kit CARK

2. Blue wire......IGNS ........Is this ignition? Green wire.....AMC ......What is this? Yellow wire....CRM .......Is this for radio/CD mute?

Thanks