Turn off and unplug the amplifier.
Lay the amp face down to look at the speaker connections. Two contacts are attached to the leads behind your amp speaker.
Pull a lead back and forth gently to remove it.
Cut a 7- to 8-inch piece of speaker wire.
Separate the speaker wire at the seam.
Strip away 1/2 inch of the wire's protective coating.
Place one end of the speaker wire over a metal terminal.
Re-attach the speaker contact over the wire, and wedge it in place.
Locate a screw or metal surface inside your amp case.
Wrap the other end of your grounding wire around the metal surface.