What wire color is the constant battery (12V) wire on this Alpine stereo?

Yellow (Jaune/Amarillo), and it is shown with a 10A fuse. The switched ignition wire is Red.

Which wire turns on an external amplifier?

The Blue/White (Bleu/Blanc, Azul/Blanco) wire is labeled REMOTE TURN-ON. The solid Blue wire is for the power antenna (POWER ANT).

What are the speaker wire colors?

Right front: Gray (+) / Gray-Black (−); Right rear: Violet (+) / Violet-Black (−); Left rear: Green (+) / Green-Black (−); Left front: White (+) / White-Black (−).

How does the Bluetooth interface connect?

The diagram shows a connection labeled 'To BLUETOOTH INTERFACE (KCE-400BT)'.

What is the Ai-NET cable used for?

The Ai-NET cable, included with the CD changer, connects the head unit to the CD Changer (sold separately).

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Alpine Head Unit Wiring Diagram - Wire Colors, Speaker & Amp Connections

Car stereo head-unit wiring harness diagram with color-coded leads

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Aftermarket car-stereo wiring diagram identifying power, antenna and color-coded speaker wires for the head unit harness.

AI caption July 2010 · Photo 3157 of 3183

This document is a wiring/connection diagram page from an aftermarket Alpine car stereo installation manual (compatible with the KCE-400BT Bluetooth interface and an Ai-NET CD changer). It was uploaded to a 1996 Ford Bronco gallery, presumably documenting the head unit installed in that truck. The diagram lists the head unit's wiring harness color codes in English, French, and Spanish: Blue (power antenna), Blue/White (remote turn-on), Pink/Black (audio interrupt in), Orange (illumination), Red (ignition), Yellow (battery, with a 10A fuse), and Black (ground). Speaker wiring is also detailed: Gray/Gray-Black for right front, Violet/Violet-Black for right rear, Green/Green-Black for left rear, and White/White-Black for left front, with polarity markings. Additional connections shown include a USB cable to iPod/USB memory devices, an Ai-NET cable (included with the CD changer), an RCA extension cable (sold separately), a NORM/EXT AP switch, and RCA pre-outs to separately sold amplifiers driving rear, front, and subwoofer speakers. The right side illustrates connections to the vehicle antenna, power antenna, amplifier/equalizer, vehicle phone, instrument cluster illumination lead, ignition key, and battery. A footnote notes the system selector switch is located on the bottom of the unit.

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Frequently asked questions

What wire color is the constant battery (12V) wire on this Alpine stereo?: Yellow (Jaune/Amarillo), and it is shown with a 10A fuse. The switched ignition wire is Red.
Which wire turns on an external amplifier?: The Blue/White (Bleu/Blanc, Azul/Blanco) wire is labeled REMOTE TURN-ON. The solid Blue wire is for the power antenna (POWER ANT).
What are the speaker wire colors?: Right front: Gray (+) / Gray-Black (−); Right rear: Violet (+) / Violet-Black (−); Left rear: Green (+) / Green-Black (−); Left front: White (+) / White-Black (−).
How does the Bluetooth interface connect?: The diagram shows a connection labeled 'To BLUETOOTH INTERFACE (KCE-400BT)'.
What is the Ai-NET cable used for?: The Ai-NET cable, included with the CD changer, connects the head unit to the CD Changer (sold separately).