Important: Never guess based on color alone. Use a multimeter.
| Pin | Wire Color | Function | | :--- | :--- | :--- | | 1 | Pink | Steering wheel control (SW1) | | 2 | Light Green | Steering wheel control ground | | 3 | Orange | Steering wheel control (SW2) | | 4 | Brown | System mute (Telephone input) | | 5 | N/A | Not used | | 6 | Gray | Amplifier remote turn-on (for factory external amp) |
Cause: Polarity mismatch or partial short. Fix: Swap the positive and negative wires on that channel. If volume returns, the original wiring was reversed.
Using the wrong wiring diagram can lead to: Toyota 08600 Radio Wiring Diagram
The Toyota 08600 series has a standardized pinout, but there are slight variations between 10-pin and 14-pin connectors. Below, we cover both.
Instead of cutting wires, buy a pre-made adapter. These convert the Toyota 16-pin connector to bare wires or to a universal ISO connector.
| Best for | Harness Part Number | Benefit | |----------|---------------------|---------| | Installing 08600 into any car | Metra 71-1761 | Reverse harness – plugs into radio | | Removing 08600 for aftermarket | Metra 70-1761 | Plugs into car's factory plug | | Adding AUX input to stock 08600 | GROM Audio USB-TOY2 | Adds Bluetooth/USB | Important: Never guess based on color alone
Cost: $7–15. Saves hours of pin-by-pin wiring and prevents damage.
This is the large rectangular plug.
| Pin | Wire Color | Function | Polarity / Notes | | :--- | :--- | :--- | :--- | | A | Gray | Right Front Speaker (+) | Positive | | B | Pink | Right Front Speaker (-) | Negative | | C | Brown | Left Front Speaker (+) | Positive | | D | White | Left Front Speaker (-) | Negative | | E | Red | 12V Accessory (ACC) | Switched power (On with ignition) | | F | Yellow or Blue | 12V Battery (B+) (Backup/Memory) | Constant power | | G | Black | Ground (GND) | Chassis ground | | H | Green | Dimmer / Illumination (+) | Headlights on signal | | I | Blue | Power Antenna (ANT) | 12V output when radio is on | | J | Purple | Right Rear Speaker (+) | Positive | | K | Light Green | Right Rear Speaker (-) | Negative | | L | Black/White | Left Rear Speaker (+) | Positive | | M | Yellow/Black | Left Rear Speaker (-) | Negative | | N | N/A | Not used | - | | Pin | Wire Color | Function |
Note: On some 08600 units, pins F, G, and H may shift position. The most reliable constant 12V wire is usually the thickest Yellow or Blue wire.
If you’re upgrading your Toyota’s factory audio system or troubleshooting a dead head unit, you’ve likely come across the Toyota 08600 series radio. These units are common in late-90s to mid-2000s Toyota models (Camry, Corolla, RAV4, Hilux, etc.). Understanding the wiring diagram is critical to avoid blowing fuses or damaging your new stereo.
Below is a breakdown of the standard 08600 wiring colors and functions. Always verify with a multimeter, as Toyota made minor changes across model years.
Are you putting a Toyota 08600 radio into a classic car, boat, or another brand of car? Here is how to connect it.