Need wire diagram for pioneer deh-p4400 car sterio

then you might have the ACC wire, turns on when you turn the Aux on, and the battery wire reversed.

I hope you like colors.. thats the speakers.. powers easy
black : ground .. red: hot wire to fuse box with hopfully a fueable link..( ever see them wires wit a fuse in middle) fuseable link..
Id run it all off that . make sure u find a power source thats always on. or it b 12: allday long

Press FUNCTION to select the time.

Press FUNCTION until the time appears in the

display.

2 Select the portion of the time display you

wish to set with 2/3.

Pressing 2/3 will select a portion of the clock

display:

HOUR-MINUTE

As you select portions of the clock display the

portion selected will blink.

3 Select the correct time with 5/?.

Pressing 5 will increase the selected hour or

minute. Pressing ? will decrease the selected
hour or minute.

http://www.generalmanual.com/Players/Pioneer-DEH-P4400-Single-CD-Player.htm

here is the link to your manuals:
http://www.pioneerelectronics.com/PUSA/Support/CarAudioVideo/In-Dash/CD-Players/ci.DEH-P3900MP.Support
see pg 2 of other manual for wiring diagram

Cheers!

You can purchase the Service Manual of the device from the link given below to get the Wiring Diagram.

http://www.user-manuals.com/advanced_search_result.php?keywords=pioneer+deh-p25+manual&forward=plist&osCsid=af9fbcd6beb79d3c348cc472df076496


http://www.smpcshop.com/DEH-P25-DEH-P250-DEH-P2500-p-4691.html

For User Guide for Pioneer DEH-P25 / DEH-P2500

http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man

Good Luck!!!!!!!!!!!

red is accesory key switch yellow is battery constant power,black is common ground,blue is remote,green black is left rear negative and green is positive,violet black is right rear negative and violet is positive,white black is left front negative and white is positive,gray black is right front negative and gray is positive.

red-------ignition
yellow--constant
black---ground
white----drvrs front speaker
green---drivrs rear
grey-----pass front
purple--pass rear
Black indicators on the speaker wires are negative
blue-----remote turn on
orange--dimmer

right rear- purple wires
left front- white wires
right front- gray wires
left rear- green wires
BLACK STRIPE NEGATIVE ON ALL
red- 12volts switche
black- ground
yellow- 12volts constant memory

Have you measured the 12v ignition and permanent supply?
Also check the earth.
You will need a tester for this.
Check the fuses

John w

Yo uwill have to get it from a Pioneer dealer or on ebay

heres one on ebay:
http://cgi.ebay.com/PIONEER-WIRING-HARNESS-DEH-1800_W0QQitemZ130171335691QQihZ003QQcategoryZ32812QQrdZ1QQssPageNameZWD4VQQcmdZViewItem