Motorcycle Repair: Sportster Starter Problem, fuse block, starter relay

Question
The other day my 2003 sportster 1200C Harley made a loud pop sound when I tried to start up.  I thought it was strange, but didn't worry too much b/c the bike then started up.  I drove it most of the day stopping at numerous places and then I stopped for awhile to visit some friends and then when I went to crank it up it now just makes a click noise (doesn't turn over) located at the starter relay.  Lights come on, gauges work but makes click noise.  I changed out the starter relay and nothing has changed.  I checked the battery, it's good.  I checked the fuse block, all fuses are good.  I checked the main circuit breaker, it's fine.  Now what should I do? Please help!

Answer
Locate the 12 volt wire going to the starter. It is the one from the starter relay. Unplug it and connect a wire to the battery and touch the pring where the wire was you disconnected. Does the bike turn over? Also, have the battery tested. Even though it shows 12 volts it might not have enough cranking amps
Mike