Another way to do this without soldering is as follows:

You will need:

1 x 3 "screw terminal blocks"
2 x diodes 1N4008 or similar
1 x can of your favourite alcoholic drink

Now mentally label the holes of the terminal block as follows:



A B C
D E F

Now take one diode and look for the white/grey line at one end.
Now take a second diode and look for the white/grey line.
Twist the two lead wires of the two diodes together at the white/grey line end and snip them off at 2cm.
Now cut each individual lead wire to another 2cm.
Unscrew screws A, B & C till there are maybe 2-3mm of gap
Push the twisted lead wires into hole B and do up the screw
Push one of the remaining lead wires into A and the other into C
Connect right indicator wire into hole D
Connect left indicator wire into hole F
Connect hole E to the tell tale wire.
Open the can and drink your drink.

I thought the drink was going to be substitute for a fire extinguisher til I read your instructions!