Battery (+) → Relay terminal 86 → Switch → Ground.
Toyota PZ071 Wiring Diagram: Achieving Extra Quality in Your Audio Installation
But why the emphasis on "extra quality" ? Because a blurry, pixelated, or incomplete PDF can lead to miswired connections, blown circuit boards, or even dangerous electrical hazards. toyota pz071 wiring diagram extra quality
Upgrading the audio system in older Toyota models often leads to the popular Toyota PZ071-00010 Go to product viewer dialog for this item.
Since these are accessory parts, your best bet for a high-resolution diagram is the Toyota Tech EU Toyota Service Information (TIS) portals. You can search by the specific part number (e.g., PZ071-00600 Battery (+) → Relay terminal 86 → Switch → Ground
When working with the Toyota PZ071, you will typically find several connectors on the rear of the unit. The primary 10-pin and 6-pin connectors handle power, ground, and basic speaker outputs. However, the secondary connectors are where the "extra quality" details matter most. These include the 20-pin or 28-pin blocks that manage modern tech integration. Proper identification of the Illumination (+) and Dimmer (-) wires is crucial to ensure the unit’s screen reacts correctly to the vehicle's headlight switch.
Avoid cutting the factory harness. Buy a "Toyota to ISO" lead. Upgrading the audio system in older Toyota models
Next set of pins to the right (+ on top, - on bottom; often Gray). Standard 6-Pin Connector (Rear Speakers)