Hi , I have a 94 disco , in the last week , my charging light has started staying on when I turn off the car??? when I turn the ignition on instead of all four dash lights coming on the charge light stays off .??? the landy runs fine ,charges ok with no other problems , but then when I stop turn and off the ignition , bang on comes the charge light , I have pulled apart and cleaned all conectors battery terminals and leads on the altenator , now I have to disconect the battery every time I stop to aviod draining the battery , HELP

The regulator on the alternator has gone, you can often buy them separately for about £15, or you can fit a new alternator.

Hi ,thanks for the info , How does the alternater draw currant from the battery when the engine is turned off???

Because part of the regulator unit is a diode pack which stops the current leaking through the alternator when the engine is off and if this doesn't work properly, current can flow in the wrong direction which flattens the battery. Not an uncommon problem.

Through the diodes in the regulator pack, if they go faulty.