Tried to fix my own AC. Had a technician come out and tell me my contactor and capacitor needed to be replaced. He wanted to charge me $500 to do both so decided to try it myself. I bought both items and changed out the contactor easily enough just by going wire to wire. However, the AC unit was using a single capacitor with a start capacitor and I switched to a dual capacitor. Figured out where the wires were supposed to go (I hope) turned power back on and the fan would run but then after about ten seconds it sounded like it would switch off and then start back up, then switch off, and then start back up, kept repeating the pattern.

Any ideas?