How to Do the Brake Bypass on Your Pioneer Radio [Wiring Diagram]

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How do you bypass the parking brake wire on Pioneer units?

The best way to do a parking brake bypass on Pioneer radio is via a bypass switch. You’ll need to connect the corresponding three wires (ground, power, and parking brake) on your wiring harness to the wires on the bypass switch.

To make it easier for you, we will go through the steps to do the brake bypass on your Pioneer radio to overcome this problem.

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Things You Will Need

The bypass switch

We recommend this bypass switch from DIYBypass.

Compatible with: 2016, 2017, 2018, 2019, 2020, 2021 and earlier Pioneer models.

Step-by-Step Instructions

Step 1: Connect the BLACK wire

Connect the BLACK wire on the bypass switch to the BLACK GROUND wire on your head unit or wiring harness.

Step 2: Connect the BLUE wire

Connect the BLUE wire on bypass to the BLUE/WHITE (system remote control/amp turn on) wire on your head unit. Amps can also share this wire.

*Do not connect this lead to the solid blue power antenna wire on the radio. If you need the power antenna wire to connect the vehicle harness’s blue power antenna wire along with the red ACC wires.

Step 3: Connect the GREEN wire

Connect GREEN wire on bypass directly to LIGHT GREEN PARKING BRAKE wire only on your head unit. DO NOT connect this wire to the vehicle’s actual parking brake circuit/wire.

*If this wire runs anywhere else, make sure to disconnect it.

Video tutorial


Do not use scotch-lock or t-tap connectors. Twist and tape, solder, or crim all connections.

The bypass and the head unit must share the same grounding point (clean metal ground). To rule out a bad ground, try a new one, and clean the metal grounding point in your vehicle (a most common issue with VW, Nissan, and Subaru).

The parking brake wire on the head unit must go directly to the green wire on bypass and nowhere else.

Legal Disclaimer

WARNING! It is dangerous (and illegal in most states) for the driver to watch the video monitor while driving the vehicle. The driver may be distracted from looking ahead and an accident could occur. Install the bypass only in Retail Display, RV, or Marine applications where there is no parking brake to interface to. Do not install the bypass where the driver may be able to view the monitor when driving. ILLEGAL USE IS PROHIBITED.

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