Recently i have been facing an issue with my honda city 2016 1.3 manual. Car is kept with extreme care and is 100k driven mechanically perfect. Recently i noticed that car is taking too much load when ac turns on. I got the ac serviced, coolant pressure is perfect. Got the car tuned including intake throttle body cat coverter and fuel filter eveything was cleaned. Plugs were okay so plugs were cleaned too. But the problem still persists. While driving on moderate to high speeds like 70-90kmph even then i feel ac turning on. When the car is idling at night headlights get dimm for a second and blower speed reduces when ac turns on. What could be the problem?? A response from seniors and experts would be appreciated.