Solved! Right rear speaker no sound

Solution
Check the speaker wire that goes from the right speaker to the amp. If it looks OK then reverse the inputs of the amp. If the right channel is still bad then the amp has a problem. If the left speaker stops playing then the right channel interconnect cable or further up the signal path has a problem.
Check the speaker wire that goes from the right speaker to the amp. If it looks OK then reverse the inputs of the amp. If the right channel is still bad then the amp has a problem. If the left speaker stops playing then the right channel interconnect cable or further up the signal path has a problem.
 
Solution