I've have just put the timing belt back on my t4 1.9td after the bottom pulley bolt and key way went i haven't connected any other auxiliaries as yet in case head has to come off. but turned over by hand to check if any bent valves seemed ok no jamming or knocks so tried a few short turn overs on the key, still no wrong sounds. then started engine, runs and sounds the same as before this happened but the oil light is now flashing red. looking at some of the other threads it seems that so wiring problems on the alternator are to blame, so if alternator isn't connected would this cause the flashing lights???