when you turn the deck on, a 12 v signal is sent from the deck to the amp via the remote wire.

__________________
2004 300M SPECIAL
Alpine CDA 9833
Alpine Pxa-h701
Alpine Rux-c701
Rockford fosgate p400-4
Rockford fosgate p4004
Hifonics BX 1205D
JBL c608 GTi
JBL p963
Infinity 2.5" center channel
Alpine type R 12"(2)
all active SQL set up with 2000 watts rms