hi can u help me i have a defender 90 and my battry keeps going flat i have put new glow plugs in it and had a new battry but wen i go back 2 start it in the morning ther is not enuf power in the pattry 2 get it going and my glow plug lite dos not gow off wen the glow plugs get hot well thats if they even get hot so i am stuck at the mo as i do not no wot 2 do i hav spen so much on it 2 get it 2 pas its mot i think the man that sold it me haz had my pants down ow the battry haz only startded 2 do this wen it got cold eny advice wood be well apreciated

Buy a new battery but first, re-charge it and see what voltage you are getting when its running. Could be a faulty alternator which can drain a battery overnight.

Oh and welcome by the way.

Had this on an old series III diesel. A few extra earth leads sorted the job. MIght be worth trying 1st