Thanks, Marc,
So a Wiggy, is just a Duspol(Brand name)Voltage Indicator, you would know them, from working in France, they are more or less a European thing, but they are very popular over here in New Zealand, most, if not all Sparkies over here carry them as part of thier kit, they are robust, dependable, and never fail, I've had my set for close on 10 years, but they have never let me down.
Real Quality,eh!. [Linked Image]