Simple steps to install Varna Ultrasonic Rat repeller to Honda Brio car –
Fix the repeller within the engine, facing the speaker upwards in the shown angle. The ultrasonic sound should hit the bonnet and reflect the sound throughout the engine bay.
Connect the red and black wire to + positive and -negative terminal of the battery respectively.
Paste the aluminium sticker to the hood directly opposite to the repellent speaker to reflect the ultrasonic sound to the other side of the engine bay.