I have ordered a Beamax screen and 12v trigger for my HS60. Trouble is the screen is going to take 2 weeks to deliver, and my builder is soon to tile the bathroom floor upstairs. Meanwhile the electrician must cable before he does this. Can anyone tell me what the cabling arrangements are for the M-Silver 16:9 electric to a 12v trigger? The screen power will go to the trigger, so the trigger needs the power, but are the cables 2, 3, or 4 core cables? can anyone help?