They are marked on the front with ‘9V’
(Red) and ‘0V’ (Black). Carefully solder the
wires this time on the component side!
Then trim off the excess wire.
The final part of the electronics assembly is
the battery box.
This too is polarised and clearly marked at
the terminal end. The Red wire will
connect to the + terminal and the Black
wire the – terminal.
The terminals have ‘eye’s’ to accept the
wires, so first insert your wires into the
terminals and then apply the iron and
some solder to secure the termination.
