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2003 Toyota Tundra radio wiring diagram

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=19235
Printed Date: May 06, 2024 at 1:33 PM


Topic: 2003 Toyota Tundra radio wiring diagram

Posted By: knutt8039
Subject: 2003 Toyota Tundra radio wiring diagram
Date Posted: September 23, 2003 at 9:20 PM

I am wondering if anyone can tell me the wiring diagram for the radio of a 2003 Toyota Tundra.  I am putting in an aftermarket stereo and to do that I have to take out the factory amp.  The wiring harness for the truck has got a( +) and a (-) dimmer wires on the connectors.  My radio does not have connectors for that.  But my radio has an illumination wire that connects to nothing on the wiring harness.  What do I do?  Also there is another connector with 3 wires that connected to the factory radio but has no use ( I think ) on the one I am installing.  What do these wires go to?  If anyone can help me with any of these problems it would be greatly appreciated.  Thank you!!!



Replies:

Posted By: bberman1
Date Posted: September 23, 2003 at 9:27 PM

Courtesy of Jeff at Velocity Motors https://www.velocitymotorsport.com

|       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |
|              12V|WHITE/ red or white  |+  |ignition harness            |
|          STARTER|GREEN/ black         |+  |ignition harness            |
|         IGNITION|BLACK / YELLOW        |+  |ignition harness            |
|  SECOND IGNITION|BLACK/ red           |+  |ignition harness            |
|        ACCESSORY|blue/red            |+  |ignition harness            |
|       POWER LOCK|WHITE/ green         |-  |either kick panel           |
|     POWER UNLOCK|RED / yellow          |-  |either kick panel           |
|       LOCK MOTOR|blue/white          |   |drivers door harness        |
|     UNLOCK MOTOR|BLACK / YELLOW        |   |drivers door harness        |
|    DISARM DEFEAT|RED / yellow          |   |drivers door harness        |
| PARKING LIGHTS +|green               |   |drivers kick panel          |
| PARKING LIGHTS -|RED / black           |   |steering column             |
|       HEADLIGHTS|GREEN/ YELLOW        |-  |steering column             |
|     DOOR TRIGGER|WHITE/ blue          |-  |drivers door harness        |
| DOME SUPERVISION|use door trigger    |   |                            |
|  FCTRY ALARM ARM|                    |   |                            |
|FCTRY ALRM DISARM|blue/black          |-  |drivers door harness        |
|       TACHOMETER|black or blu/wht *1 |   |instrument cluster, brn plug|
|      SPEED SENSE|GREEN/ orange        |4k |instrument cluster, brn plug|
|       BRAKE WIRE|GREEN / WHITE         |+  |drivers kick panel          |
|     HORN TRIGGER|GREEN/ red           |-  |steering column             |
|           WIPERS|blue/black          |+  |steering column             |
|  LF WINDOW UP/DN|lt. grn - blu/yel   |A  |drivers window switch       |
|  RF WINDOW UP/DN|RED / blk - RED / grn   |A  |drivers kick panel          |
|        RADIO 12V|blue / YELLOW         |+  |radio                       |
|     RADIO GROUND|brown               |-  |radio                       |
|     RADIO SWITCH|gray                |+  |radio                       |
| RADIO ILLUMINATE|green               |+  |radio                       |
|    POWER ANTENNA|                    |   |                            |
|       LF SPEAKER|pink - purple       |   |radio                       |
|       RF SPEAKER|green - blue        |   |radio                       |
|       LR SPEAKER|black - yellow      |   |radio                       |
|       RR SPEAKER|red - white         |   |radio                       |

Notes:
*1 It is black on the 6 cylinder models, and blue/white on the 8 cylinder models, at the instrument cluster. On the 6 cylinder models the black wire is also found on the drivers side of the motor at the diagnostic connector. On the 4.7L V8 can also use BLACK/ blue at coil #1 on the drivers side.






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