View Full Version : Please Help T4 tachometer not working + alternator light on

25-05-2010, 05:03 AM
Hello all, I have 1993 T4 with 2.4 diesel and the tachometer is not working while the charging/alternator light is on. The trouble is that the alternator charges at 13.5-14 volts but curiously the charging indicator inside - where the displays are for temperature, water level, fridge...as we have a Westfalia - indicates around 12 volts (while the engine is running, otherwise it shows the voltage on the auxuliary battery). Oh, and the battery is fine and alternator brushes/regulator is fine. Is there something else there? perhaps a relay? Any help would be greatly appreciated. Thanks in advance.