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Pioneer DEH-780

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PostPosted: Mon Sep 20, 2010 8:09 pm    Post subject: Pinout DEH-780 Pioneer Install Reply with quote

I have a Pioneer DEH-780, purchased used from a friend

I have the wiring harness attached, but no idea which wire does what.

I need a wiring diagram, a pinout, so I can install the sterio in my car.

There are 4 femae RCA jacks; two red, and two white. There is also a rectangular plug with 10 pins, two rows of 5 pins.
The rectangular plug has only 7 wires attached, some wires may have come out of it, or maybe it only had 7 to begin with. The wires are in this order from top right to bottom left;

X, X, X, Grey, Green
Black, Orange, Blue, Grey/Black, Green/Black

I was unable to find any useful information online, so I'm filling out this form as a last attempt.

I hope you can help me out with this.


Kevin Hyatt


Thank you for contacting Pioneer Electronics, Inc.

The RCA jacks are Preouts that can be run to an external amplifier. The red/white set on the right is the front out. The red/white set is on the left is the rear out.
Wiring is as follows:
Black – Ground
Red – To electric terminal controlled by ignition switch (12V DC) ON/OFF
Orange – To terminal always supplied with power regardless of ignition switch position (memory)
Blue – To system control terminal of the power amp or auto antenna relay control terminal. (max 300mA 12 V DC)

Speaker connections:

Front left
+ Green
- Green/black
Front Right
+ Gray
- Gray/black

Thank You,

Customer Service Representative
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Joined: 23 Jun 2004
Posts: 63

PostPosted: Thu Oct 07, 2010 12:03 pm    Post subject: Reply with quote

here is pinout
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