Red Seal Transport Trailer Technician Practice Exam

Question: 1 / 400

Which condition must be avoided to ensure the trailer's brake light system is functioning?

Rusted brake plates

Corroded electrical terminals

To ensure the trailer's brake light system is functioning properly, corroded electrical terminals must be avoided. The brake light system relies on a complete and uninterrupted electrical circuit to emit a light signal when the brakes are engaged. Corrosion at the electrical terminals can create resistance within the circuit, leading to poor conductivity. This can result in the brake lights not functioning at all, or flickering intermittently, which can pose a significant safety hazard on the road as it may prevent other drivers from being alerted to the braking action of the trailer.

Proper maintenance of electrical connections is crucial for the reliable operation of safety features like brake lights. Keeping these terminals clean and free of corrosion helps ensure that the electrical system is fully operational, enhancing visibility and communication on the road.

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Uneven tire pressure

Loose axle bolts

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