Pinouts >  Genuine Lexus and Toyota Car Audio Head units harness
12 pin Toyota Head Unit CD Changer connector layout
12 pin Toyota Head Unit CD Changer connector
at the car stereo
not for navigation or DVD radio
Pin Function Details
1 R+ Right Audio Input Positive
2 L+ Left Audio Input Positive
3 SGND Signal Ground
4 Mute Logical 1 when Radio Switch is On
5 BU+B Battery +12V
6 R- Right Audio Input Negative
7 L- Left Audio Input Negative
8 GND Ground
9 TX- Transmission-
10 TX+ Transmission+
12 ACC+B +12V when key is in ACC/AUX position

May be used to connect CD, MP3, AUX player.

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Toyota (1990-2002) CD/MP3 Changer visual pinout:click to enlarge
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