Power Amplifier
| Terminal No. | Contents | Measuring condition | Standard |
| (R81) No. 1 | LH front door speaker (+) | ||
| (R81) No. 2 | RH front door speaker (+) | - | - |
| (R81) No. 3 | LH side tweeter (+) | - | - |
| (R81) No. 4 | RH side tweeter (+) | - | - |
| (R81) No. 5 | LH front door speaker (-) | - | - |
| (R81) No. 6 | RH front door speaker (-) | - | - |
| (R81) No. 7 | - | - | - |
| (R81) No. 8 | Amplifier ON signal | - | - |
| (R81) No. 9 | LH side tweeter (-) | - | - |
| (R81) No. 10 | RH side tweeter (-) | - | - |
| (R82) No. 1 ↔ Chassis ground | Battery power supply | Always | Battery voltage |
| (R82) No. 2 ↔ Chassis ground | Ground | Always | 0 V |
| (R82) No. 3 | - | - | - |
| (R82) No. 4 | - | - | - |
| (R82) No. 5 | - | - | - |
| (R82) No. 6 | - | - | - |