20 Most Recent Pioneer DEH-P4100 Questions & Answers

here are the wiring for the deck and the car:
12v - red
ignition: yellow
blk - ground
orange - dimmer
white - frt left +
white /blk - frt left -
gray - frt right +
gray /blk - frt right -
green - left rear +
green /blk - left rear _
Purple - right rear +
Purple w/blk right rear -
2002 Oldsmobile Alero Car Radio Stereo Audio Wiring Diagram
Car Radio Constant 12v+ Wire: Orange
Car Radio Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger: Dark Green
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Pioneer... | Answered on Sep 23, 2018

There should be a reset button on either the face of the player or under the faceplate if its removable (tiny black button). Otherwise to remove the cd disconnect the unit and then plug it in or remove the memory fuse or battery lead for 5 seconds.

Pioneer... | Answered on Jun 10, 2012

Press and hold the SOURCE button until the unit turns off. Press and hold the FUNCTION button, until display pops up, then release. (If you do not have a FUNCTION button, then push the AUDIO button) Press the FUNCTION button again until the clock shows on the display. Press the UP and DOWN buttons to adjust the hours. Press the LEFT or RIGHT arrows to move to the minutes. Press the UP and DOWN to adjust minutes. When complete, press the SOURCE button to exit.

Good Luck

Pioneer... | Answered on Dec 23, 2010

I had a similar problem with one of the cursor type keys - I ended up taking the face apart (4 small screws on the back then gently prise apart) & discovered the small pin attached to the back of the button which presses the internal switch had slipped off the pad, it took a couple off attempts to put it back together again but once it was re-assembled it was fine, just be careful not to lose anything! ;)

Pioneer... | Answered on Dec 10, 2010

There are 2 battery supplies to the radio,.

The main one via the ignition key circuit for the radio itself.

The other one is a permanent battery feed to the radio memory.

It is this second (permanent) feed that is missing.

Check the fuse, connectors + wiring to see if there is anything obvious.

If you have a multimeter or test lamp then that can be used to prove the problem

Pioneer... | Answered on Sep 04, 2010

The following website will help you out.<br /> <a href="http://www.pioneerelectronics.com/StaticFiles/Manuals/Car/DEH-P4100UB_OperationManual1021.pdf">http://www.pioneerelectronics.com/StaticFiles/Manuals/Car/DEH-P4100UB_OperationManual1021.pdf</a>

Pioneer... | Answered on Aug 25, 2010

remove the unit and disconnect the battery+red and yellow cables.check the front unit for derfomed plastics or stucked somehow microswitches!someone stucked from the heat!

Pioneer... | Answered on Jun 06, 2010

try pressing the reset switch. should be a pencil tip sized hole on either the face or the subpanel. barring that you can try disconnecting power to the radio for a few minutes.

Pioneer... | Answered on Apr 29, 2010

yes , also u may want to check ur connection

Pioneer... | Answered on Apr 14, 2010

what color is what on the pioneer deh-p4100

Pioneer... | Answered on Mar 21, 2010

Lookes like you have an older unit but never the less you can usually find wiring diagrams online. ? Do you have an aftermarket harness fitted to your vehicle if not you need to get one for connecting your radio makes it easier. But if you should have a standard wiring for it Your red, yellow, orange, and black the orange would be for a dimmer if you had one and your would also have a blue with which strip which would be your remote wire for an external source which in your case it want be used unlsess your hooking an amp up But Red is you Acc or ignition which will connect to the red on on the harness if you have already purchased one. The yellow is your constant 12v which is for memory and your black of coarse is ground. These wires will all tie into the right harness providing like i said you bought one. If not go get your harness for your vehicle you can pick one up virtually anywhere.

Pioneer... | Answered on Mar 06, 2010

Not finding what you are looking for?
Pioneer DEH-P4100 Logo

57 questions posted

Ask a Question

Usually answered in minutes!

Top Pioneer Car Audio & Video Experts

The Knight
The Knight

Level 3 Expert

76125 Answers


Level 3 Expert

85161 Answers

xxxxxx xxx

Level 3 Expert

5013 Answers

Are you a Pioneer Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

Pioneer Car Audio & Video

  • Pioneer Car Audio & Video

Most Popular Question

set clock

  • Car Audio & Video