ORIGINAL: ShaDy Emad

HeyI and my friends have almost built our first turbine Engine ( Jet Engine ). Now our problem is the glow plug. We could find only this one : http://www3.towerhobbies.com/cgi-bin...1p?&I=LXCB27We don't know how it's working. The only written instructions is to connect 1.5V battery to the plug. But I can't identify the polarity of the plug, i.e. where to connect the positive side of the battery and where to connect the negative side.The question may be fool, but we don't have an ECU yet and we would like to test if the engine is working and if the glow plug is working well. We don't have any wires or cables accompanying.We have only The Glow Plug and The BatteryAny Help ??