My friend has a 2002 Megane 1.9 DCI which the glow plugs are not turning on unless he tries the ignition 10 or 20 times. He has tried changing the glow plugs, preheating module, and coolant temp sensor but while it's improved it's not fixed. Does anyone know which of the relays is for the 70amp glow plug circuit? Or any other ideas on how to fix it? Cheers