[QuadList] any manuals or a file on HEAco or Bethany International amps? heaco is also H

[COURYHOUSE at aol.com]

any manuals or a file on HEAco or Bethany International  amps?  

heaco is also Houston Electronic Assembly Company they are all the  same  
company just changed names
 
5002 mono 10 chan. auto dist amp
 
5004 is a stereo one
 
early ones  had meters later had led bar indicator
want to know what the  green and yellow test points on the 5002  are  for  
for starters!
 
these are older units...
thanks  ed sharpe
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