In the Video I say "Capacitor" when I should have said "Ballast" single light fitting.
Video shows the different wiring between a single fluorescent fitting and a paired fluorescent fitting on magnetic ballasts with starters. However 4ft, 5ft, 6ft and 8ft magnetic ballasted twin fittings are 2 single wired lamps with there own ballasts. Unlike some Electronic ballasted fittings.
Single fitting has a Sylvania luxline plus F18W/835-T8 White tube and a Hilux SSU 4 - 65 watt starter, the Ballast is Tridonic.Atco EC 18 LC502K 240 Volt 50Hz with small blue Capacitor, fitting was made for Wickes Model: 162281, its designed for 18 watt T8 tubes but 20 watt T12 all so fit and work.
Paired Twin fitting has 2 Sylvania luxline plus F18W/835-T8 White tubes and 2 paired DAKS FS-2 4 - 22 watt starters, the Ballast is Philips BTA 36W 9130321005 240 Volt 50Hz with small grey Capacitor, fitting was made for Wickes Model:35090/70/00NZ 700511 2 x Max 18W/G13 but 20 watt T12 all so fit and work.