Pioneer DEH20UB owner manual Connections, Vehicles with a 12-volt battery and negative grounding

Section

03Connections

Important

!When this unit is installed in a vehicle without ACC (accessory) position on the ignition switch, red cable must be wired to the term- inal that can detect the operation of the igni- tion key. Otherwise, battery drain may result.

	F	ON
	F
	O			S
				T
			R	A
		T
ACC position	No ACC position

!Use of this unit in conditions other than the following could result in fire or malfunction.

—Vehicles with a 12-volt battery and negative grounding.

—Speakers with 50 W (output value) and 4 ohm to 8 ohm (impedance value).

!To prevent a short-circuit, overheating or mal- function, be sure to follow the directions below.

—Disconnect the negative terminal of the battery before installation.

—Secure the wiring with cable clamps or ad- hesive tape. To protect the wiring, wrap ad- hesive tape around them where they lie against metal parts.

—Place all cables away from moving parts, such as gear shift and seat rails.

—Place all cables away from hot places, such as near the heater outlet.

—Do not pass the yellow cable through a hole into the engine compartment to con- nect to a battery.

—Cover any disconnected cable connectors with insulating tape.

—Do not shorten any cables.

—Never cut the insulation of the power cable of this unit in order to share the power with other devices. Current capacity of the cable is limited.

—Use a fuse of the rating prescribed.

—Never wire the speaker negative cable di- rectly to ground.

—Never band together multiple speaker’s ne- gative cables.

!Control signal is output through blue/white cable when this unit is powered on. Connect it to an external power amp’s system remote control or the vehicle’s auto-antenna relay control terminal (max. 300 mA 12 V DC). If the vehicle is equipped with a glass antenna, con- nect it to the antenna booster power supply terminal.

!Never connect blue/white cable to external power amp’s power terminal. Also, never con- nect it to the power terminal of the auto anten- na. Otherwise, battery drain or malfunction may result.

!Black cable is ground. This cable and other product’s ground cable (especially, high-cur- rent products such as power amp) must be wired separately. Otherwise, fire or malfunc- tion may result if they are accidentally de- tached.

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