I need the wiring diagram for the Pioneer CD player model DEH P6400

red - 12v battery
yellow- 12 ignition
black- ground
blue/white- amp turn on
white FL+
white/black FL -
gray FR +
gray/black FR -
green RL +
green/black RL -
purple RR +
purple/black RR -

you can buy one at the pioneer website in accessories parts. but if you are talking about a wiring harness that wires directly into the existing wiring harness for the car then you can get one of those at any local car audio shop. or walmart sells them cheap.

the standard radio diagram is

yellow 12v battery

red 12v accessory

black earth

blue/white amp rem

blue power antenna

white fr left +

white/black fr left -

grey fr right +

grey/black fr right -

green rear left +

green/black rear left -

purple rear right +

purple/black rear right -

that should help u

constant is yellow . switched ignition is red. ground is black. amp remote is blue white. illumination is orange. speakers are gray front right. white is front left. green is rear left. purple is rear right. all speaker wires have a match with a black stripe.black stripe is negitive

If the factory harness is still in tact, you can buy an adapter at Best Buy for about 20$ or ask to see one and write down the pins and wires then match it up and cut n splice to your new deck. Hope this helps

Did you also use an antena adapter? If not you may need one. Original in the vehicle is small and can pop out from the radio.

Check here for the info you need.

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

i need a wire layout

I posted an installation manual here for this radio. It should be available within 24 hours. Just click on the model number above and scroll down till you see it. Then open the manual and connect the wires according to the wiring diagram. Simply slice the wires after you cut off the plug. Good Luck