anyone have have a wiring diagram for a 2005 f150. i wanna hook up an amp top the factory radio and dont know what colors are what. thanks

 

I am pasting this from an archive thread I just found while looking for similar information. It was posted on 12-04-05 by "mwheue":
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From another thread awhile back. Hope it helps!

F150 2004 2005 2006 MY Radio Wiring
LG-VT
voltage supplied at all times overload protected
LG-YE
accessory delay relay output
LB-RD
instrument illumination
BK
ground
OG-LG
left front (+)
GY-LB
left rear (+)
OG-RD
right rear (+)
WH-LG
right front (+)
DG-OG
right front (-)
BK-LG
ground
GY-BK
vehicle speed signal
RD-BK
voltage supplied in start overload protected
LB-RD
steering wheel signal
DG-OG
steering wheel signal return
DB
parking aid mute
LB-WH
left front (-)
TN-YE
left rear (-)
BR-PK
right rear (-)
BK - Black, BR - Brown, BU - Blue, DB - Dark Blue, GN - Green, GY - Grey, LB - Light Blue, LG - Light Green, NA - Natural, OG - Orange, PK - Pink, RD - Red, SR - Silver, TN - Tan, VT - Violet, WH - White, YE - Yellow