Electronic Ignition

["Martin Pearce" <dungey@pearcem95.freeserve.co.uk>]

Guys

Am fitting a Petronix Electronic Ignition to my Mk1 +ve earth Spit (yes I
have the right kit!)

In the instructions it says

Connect an insulated AWG20 copper wire from the positive coil terminal to
the positive batter or chassis.


I cant seem to find AWG20 copper wire at my local Halfords.  Any idea where
I might get some from?  Is this a specific US reference?  all I can find is
wire rated by its AMP.

Cheers

Martin