Nissan Sentra 2001 head unit

My friend has a 2001 nissan sentra se and I wired an rca apater to his stock deck because his stock deck  did not have one and he did not want to buy an after market deck.  I was just wondering if the deck had enough voltage to power the rca output for the amp.  I wired the rca adapter to the left and right speaker output wires on the wire harness.  And does anyone happen to have color codes or a diagram of the wire harness for the head unit of the 2001 nissan sentra se.  So far it has been test and trial and a digram or color code for the harness would be of great help.

thanks very much,

Nick Cervantes

|        RADIO 12V|blue                |+  |at radio                    ||     RADIO GROUND|                    |   |                            ||     RADIO SWITCH|pink                |+  |at radio                    || RADIO ILLUMINATE|yellow/red          |+  |at radio                    ||       LF SPEAKER|purple - grn/yel    |   |at radio                    ||       RF SPEAKER|brown - brn/wht     |   |at radio                    ||       LR SPEAKER|orange - blk/pnk    |   |at radio                    ||       RR SPEAKER|gray - gry/red      |   |at radio          Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA