I only know that the a/c is at least 10 years old and the lights were dimming at first when we moved in. I replaced the capacitor and lights stopped dimming for 3 days. I made sure everything in house was off during testing. Hvac tec came out for free just to test capacitor and said I installed it correctly and it is fine. That is all he would check for free since we are new in town. He suggested a hard start kit. Installed the kit and it quit dimming lights for 2 days this time. Any idea what might be going on? Sadly breaker box is listed as 150 and I was told we should have 200 for when everything was turned on. During testing I had all computers unplugged and fridge.