Motorcycle Repair: OEM horn installation, poor conductivity, liquid electrical tape

Question
I bought a OEM 12v admittidly 'cheep' horn.  But the picture of the missing horn looked similar so what the hey.  I hooked it up directly to the 12v battery and man is it loud!  Well, I had about a half inch of wire the prior owner left me for both the power and ground wires.  So, I connected some extra using extensions.  I've got plenty of power in the leads but when I hood the horn up it just makes a kinda thunk noise instead of a blast like it does when testing.  I've checked all my connections about 50 times.  Maybe, if I'm this stupid I better just part out this old 82 yamaha XJ650 :-)   

q: you got any ideas about what I'm doing wrong?  

Answer
Hi Perry,

How much do you want for the handlebars and front fender? LOL... Just kidding, of course.

Instead of solderless connectors, try splicing the new length of wiring into the circuit by soldering. Test the horn after soldering. Cover the soldered joint with shrink tubing and/or Liquid Electrical Tape to finish.

Solderless connectors may cause excessive resistance and poor conductivity in a circuit, resulting with such results that you've described.

Ensure horn terminals are clean and corrosion free. Apply a bit of dielectric grease to the terminals.

Respectfully,
Mark Shively