Have new glow plugs, also glowplug relay, fuse OK,Compresion checked in region of 350 psi.fuel filters also changed.Has anyone information on relay to temp sensor details etc wiring colours presumable black is earth and does go to earth ,there is red/blue .,orange ,another 0ne relay fitted G Cartier No PSA9629493280 12v 735076 input socket no1,2,3.4.5 main plug terminals 8,9.diferent sizes

JOHN, March 2010