I CAN NOT FIND HOW TO HOOK UP THE SPEAKER WIRES ON MY DEH-P4300

Did you use a wireing Harness adapter kit to hook it up in your car to the factory radio harness, If not the speaker wires are probally cross up. End thats why your not getting sound,

You may download the installation manual here. The wiring diagram is on the second page.

Red is Switched 12V
Black is ground
Yellow is Constant power
White/black is Left front -
White is Left front +
Purple/Black is Left rear-
Purple is Left rear +
Grey is Right front +
Grey/Black is right front -
Green is Right Rear +
Green/Black is right Rear -
Blue is Remote turn on/power antenna
Orange is illumination

this issue is caused by the deck not being hooked up to the constent from the cars battery take the deck out of the dash and get the color codes for the car and the deck and find the wire thats for the constant from the battery and hook up thoes wires

the wires are usually labeled on the deck as follows

labeled wires
red .......... ACC
yellow......+Battery
blue ........ system remote control/remote

unlabeled wires
green ...................................... speaker+
green with line ......................... speaker-
purple ..................................... speaker+
purple with line ........................ speaker-
gray ....................................... speaker+
gray with line .......................... speaker-
white ...................................... speaker+
white with line ......................... speaker-
black ..................................... Ground
orange ................................... dimmer+ (usually not used)
orange with line .......................dimmer- (usually not used)

i reccamend you to get the plug in harness that has the wireing alredy done you only have to match up the colors

i hope this helps

Un hook all your speakers that the deck is powering and hook them up one by one sounds like u have a shorted speaker or wire and the unit is going into protection.The best way to chk the speakers and wires is with an ohm meter . Check each speaker wire to ground and across the speaker and see iof you have any shorts. The next step woulk be to remove the unit and have it bench tested.

Hook 1 speaker to the white (+) and white/black (-) wires and the 2nd speaker to the gray (+) and gray/black(-) wires.

The green and the purple wires are the other speaker wires dont use them cut them so they are connected to anything and tape them with black electric tape so they wont short out and touch the chassis of the car by accident. Also dont let them touch each other too thats why you have to tape the exposed wires and insulate them. Many people forget to do that.

If you have the audio jacks on the radio, you can buy an ipod/audio adapter. If you have cassette player, you can get that adapter also.

No diagram available for 10yr old head...sorry:o(
Other than that, it should be easy to hook it up, I'm sure there's no sub-outs etc. Should have 4 sets of speaker wires bundled together coming out of the back of the radio chassis. Yellow, is switched power...all the speaker wires have a stripe on one of each of the two wires, thats the "common" wire. White is ground for the chassis.
Good Luck

i hope this helps you
http://www.pioneerelectronics.com/PUSA/Support/CarAudioVideo/Source/CD-Players/ci.DEH-P4300.Print?tab=D

The wires may have gotten wet and fried something in the sound output in the stereo.