Streeetch

Hi folks hoping someone can help Cranking my zafira over after doing some work to it and it's started a whining at the back of the engine near the starter I turned the ignition off it's confused whining so disconnected the battery and its stopped i have a video which is me attaching the negative terminal on the battery and holding my phone to the back of the engine but I can't upload it here received_1559315708141692.mp4