Question about Kenwood KDC-MP435U CD Player

1 Answer

Illumination v. Dimmer

When I installed my unit in my F150, I found that the truck had two light wires - 1 for illumination and 1 for dimmer. But, my Metra BB-1771 wiring harness only had one wire for lighting. The plastic wire cover said "ILLUM" and the stick-on tab on the end said "DIM". I hooked the harness wire up to the truck dimmer wire. The display now dims when I turn on my lights. But, now I've noticed that the the clock does not display when the unit is turned off (don't turn it off much, so it took a while to notice it). Don't know what it would have done if I had connected to the Illumination wire instead. Is this typical of the KDC-MP435U? Should I have connected to the truck illumination wire instead?

Posted by on

  • rpurdy Mar 18, 2008

    My problem with the clock is that if the unit is off, even while the car is running, the clock does not display. I can understand it not displaying if the car is turned off, but is it normal for this model to not show any display when the unit is off and the car is running?


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 405 Answers

Good day,

The illum wire goes directly to the headlight switch and tells it when to light up, where as the dimmer wire is variable meaning it would dim up or down with your dash light control. Dimmmer is usually only need on factory radio's and not aftermarket. I suggest wiring only to the illuum lead and do not connect dim. Also about the clock make sure your red and yellow wires are not crossed, yellow is a constant hot and red is only hot when the ignition is on, so if they are backwards the radio would loose it's memory when you turn the key off.

Hope this helps

Posted on Mar 12, 2008

  • rayzjauncurr Oct 05, 2010

    Ok I have the same problem.What should I hook the illumination wire up to if there isnt one on the back of my aftermarket deck?Hope you can help and thanks.!


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

What do I hook the illumination wire up to

What vehicle are you connecting to? Most vehicles have an illumination connection on the wiring harness. If you're missing the plug you can find the wire with a test light. Turn on your parking lights, Check the wires for power, it will most likely be a light blue wire. Now with your test light still attached, turn your light dimmer down. If your test light dims then you have the right one.

Nov 15, 2013 | JVC Car Audio Receivers

1 Answer

What are the color indicators for factory wiring of radio in 1999 GMC envoy

Constant 12V+ Orange Switched 12V+ Yellow Ground Black Illumination Gray Dimmer Brown Antenna Right Front Front Speakers 6 1/2" Doors Left Front (+) Tan Left Front (-) Gray Right Front (+) Light Green Right Front (-) Dark Green Rear Speakers 6 1/2" Rear Doors Left Rear (+) Brown Left Rear (-) Yellow Right Rear (+) Dark Blue Right Rear (-) Light Blue

Dec 01, 2011 | Alpine Car Audio Receivers

1 Answer

I have an orange wire that goes to me dimmer i just dont dont know were to tap in it wat??

the orange wire is usaully illumination so when you switch your lights on the stereo dims.

Sep 21, 2009 | Car Audio Receivers

1 Answer

Wiring confusion

yellow constant
red switch
black is ground
blue power antenna if any
dimmer i/illumination is optional

front- right-red/green-+

these are all the positive side wire for all your spkr

Jun 25, 2009 | Clarion DXZ945MP CD Player

1 Answer

I just got a Clarion DXZ385USB deck installed, but the screen does not appear blue as in the product pictures. It is dark and barely readable. Dimmer is turned off. Any ideas?

I didn't have to connect the illumination lead. If you have the battery wires(yellow) connected, the screen will light up pretty bright. When I connected the illumination wires(orange), I got the same dim screen light effect.

Apr 17, 2009 | Clarion DXZ385USB Car CD/ MP3 Player

1 Answer

I got all the iwires but the 2 orange wire for

Just terminate the wires.
Pioneer does not use dimmer illumination in the lower models.

Thanks for using FixYa - a FixYa rating is appreciated for answering your Free question.

Mar 30, 2009 | Pioneer DEH-1500 CD Player

1 Answer

No back light on display

I know that most Clarions have an "illumination" wire usually orange and or orange/white. If the unit only has one, then most likely it is for a "dimmer circuit" and not atraight illumination. Let me know. If by putting power on tat orange wire does not do it, then you have a bad "bulb" in the faceplate.

Larry T
Winona Lake, IN

Jan 28, 2009 | Clarion DRB2475

2 Answers

Plymouth voyager

Hi Marlon,

Not a whole I can do to help. What I can do is refer you to go get a Chilton, or Haynes manual thac voers your Plymouth Voyager. They have schematics with wire colors labeled.You will have a good shot at figuring out which wire is which.

Nov 24, 2007 | Car Audio Receivers

Not finding what you are looking for?
Kenwood KDC-MP435U CD Player Logo

1,286 people viewed this question

Ask a Question

Usually answered in minutes!

Top Kenwood Car Audio Receivers Experts

xxxxxx xxx

Level 3 Expert

4706 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Pablo Gonzalez

Level 3 Expert

733 Answers

Are you a Kenwood Car Audio Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides