Volvo Repair: Horn replacements, regina system, horn spring

Question
I have a 92 740 wagon Regina system.  i just replaced the horns with "universal" replacements.  I've been having trouble with the connections to the horns for a while.  I replaced the connectors on the harness with crimp on "sta-con" connectors so they would fit up to the new horns.  this should have been an easy replacement you would think, but they do not sound any suggestions would be helpful
Thanks
Art

Answer
Hello Art, Well your right, eazy you think,and then wonder why not.I just installed the similar systen on a '90 740.Used both the high and low tones and used 'blade connectors',removing the original ends first.My package came with grd. wires which I didn't need for the volvo.Now the horn contacts can cause problem corrosion under the copper contact set in.The horn spring contact against the horn ring could be in need of cleaning.The horn relay was not ever a problem that I have heard of or experienced.Thank you and good hunting!  PKD