Pin arrangement as viewed from the wiring harness connectors:
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Pin arrangement as viewed from the back of the head unit:
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| Pin Number |
Pin Name |
Description (may be empty) |
| 1 | BATT | Continuous +12V From Battery |
| 2 | ILM | Illumination |
| 3 | FL+ | Front Left Speaker + |
| 4 | FR+ | Front Right Speaker + |
| 5 | RL+ | Rear Left Speaker + |
| 6 | RR+ | Rear Right Speaker + |
| 7 | GND | Unknown, Not Connected |
| 8 | H-RC | Remote Volume Control |
| 9 | ACC | Accessory +12V From Ignition |
| 10 | TU+B | Antenna* |
| 11 | GND | Chassis Ground (-12V) |
| 12 | ILM CONT | Illumination Control |
| 13 | FL- | Front Left Speaker - |
| 14 | FR- | Front Rigth Speaker - |
| 15 | RL- | Rear Left Speaker - |
| 16 | RR- | Rear Right Speaker - |
| 17 | NC | Not Connected |
| 18 | NAVI L | Navigation Left Audio Input* |
| 19 | NAVI R | Navigation Right Audio Input* |
| 20 | NAVI GND | Navigation Ground* |
* Some Models - This functionality is not available in all head units. (Necessary components are not soldered onto the circuit board)
CD Changer Connector
| Pin Number |
Pin Name |
Description (may be empty) |
| 1 | ILM | Illumination |
| 2 | GND | Chassis Ground (-12V) |
| 3 | ACC | Accessory +12V From Ignition |
| 4 | BUS | Communications Bus Signal1 |
| 5 | NC | Not Connected |
| 6 | CHG-Rch | Right Channel Audio Input1 |
| 7 | SHILD GND | Audio Ground1 |
| 8 | ILM CONT | Illumination Control |
| 9 | BATT | Continuous +12V From Battery |
| 10 | GND | Chassis Ground (-12V)2 |
| 11 | BUS GND | Communication Bus Ground12 |
| 12 | BUS SHILD | Bus Shield12 |
| 13 | CHG-Lch | Left Channell Auido Input1 |
| 14 | SH-GND | Ground, Unknown1 |
1 Shielded cable
2 Connected to ground plane