GROUND BUSS WIRING

Cut two 4 1/4" lengths of tinned buss wire. (I used copper)

Thread one wire through the lower hole of terminal 10, through the lower hole of terminal 15, over the inside face
of the terminal A3, through the lower hole of terminal 18, then loop the end into the lower hole of terminal 17.
Solder all connections, including the wire to the base of terminal A3. Make sure the wire does not touch A2 or A4.