Type your answer here... Hi,it is more than likely the diode pack in the alternator,also check to see if the alternator is warm to the touch even after a couple of hours,just replace the complete alternator and it will more than likely be o.k.
You have a flat battery.
The voltage reg is sticking and will run down the battery.
I had this problem on my disco 1. Turned out to be the alternator, which was replaced and the problem was fixed.
check for a bad earth strap going t gearbox to battery
When the ignition is turned on, battery voltage passes down the wire to the alternator to 'excite' the alternator when the engine starts. When the engine starts and the alternator generates a voltage, the light is extinguised by the charging voltage cancelling out the battery voltage coming down the wire. If and when the alternator completetly fails the the light will come back on as there is no sancelling voltage. if the alternator produces a voltage lower than the voltage from the ignition switch then the battery light will glow.
Never unhook the battery with the ignition turned on. There is always a little voltage spike that occurs when disconnecting or reconnecting the battery. If the ignition is on the computer will be powered up and that spike could "fry" the computer.
bulb no good.
No , Of Course
Battery first. Will it start with a jump? Battery ok, then use a test light & see if you have current in the hot wire to solenoid when key turned. If you do, it's the starter. If not maybe the switch but start there.
the light in the dash has been removed or blown out.
It's possible that you have a bad ignition switch. Normally, those lights won't turn on unless the ignition is turned to the "Run" position. A bad switch may be allowing current to flow through one or more contacts when it's not supposed to.
The check engine/service engine light should come on as soon as the ignition is turned to the on position without starting the engine. If it does not, then the bulb is either blown or has been removed.