Dashcam Suggestion under 10K

Dashcam suggestion under 10K

Hi Redditors, I have few questions to ask: 1. can you please help me with your suggestions or experiences on dash cam under 10K? 2. can you suggest how to install mono/dual channel dashcam? 3. will it be the case where wires can be seen once we are in the car? does it void warranty while getting installed?