2001 faulty relay

Hi, I have a 2001 Isuzu Rodeo 3.2 4x4. I have a faulty relay that that was turning on my A/C. I have been having A/C problems for a while. The A/C would come on sometimes, and then not coming on others, so I touched the relay and the A/C came on. Everytime the A/C would come on, I would touch it, and it would always work. I got tired of touching the relay, so I switched it with the headlight relay (which is the same) and my A/C always works. Now my headlights don't want to come on all the time. The relays are the same for the headlights, A/C, starter, and a few other things. I can't find these relays anywhere, I have gone to every auto parts place in town, including Autozone, Advance Auto, and Napa. I have also tried every search on the Internet, and I cannot find it.

The number on the relay is:
0560A21D
ISUZU
897231 2640

Thanks, Brian.

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