The Glow plugs won't kick on. I checked all of the fuses in the fuse box near the master cylinder, everything works but when I turn the ignition to the appropriate position the glow plugs refuse to light (and the glow plug dash light does not come on - all of the other dash lights and equipment are just fine). The motor turns over just fine but it just won't start (cause the glow plugs arent working).. Where else can I look? I hve been googling but can't find anything, is there a glow plug relay?? Help!!!