Reading method for circuit diagram of combination instrument system

① Positive pole of battery → SA3110A → SC13, 5A → internal connection wire A167 → T32/4 of instrument control unit J285.

② Ignition switch 15 → SC2, 10A → internal connection wire A20 → T32/23 of instrument control unit J285.

③ Oil pump circuit. From terminal 87 of fuel pump relay J17 → SC45, 15A → address code 55 → fuel pump G6 → grounding.

④ High beam circuit. Manual dimmer switch E4 (i.e. the over light switch, pull the switch, the power supply of the light switch passes through the manual dimmer switch contact to the T12/12 pin of the manual dimmer switch) → SC18, 15A → internal connection wire A95, divided into three paths:

First route: Left high beam bulb M30.

Second route: Right high beam bulb M31.

Third route: T32/25 of instrument control unit J285 (to control the instrument high beam indicator light K1 to light up).