haha, ive flipped the polarity on the socket that plugs into the ballast and all the the other wires are red/red black/black, im down near pickering mate, guessing your hartlepool from your info<<<
ill have a swap around with the wires tomorrow and hopefully they'll strike.
do you know if its matters at all that i don't have any of my other bulbs plugged in? i lefvt them out as i've ordered a full new set