right, heres what i found. fiddling with the dodghy lights (rear) i had fitted the connectors wrong way rnd and shorted half a dozen fuses. one of whitch was the dash/clocks lights. well after reading that the clocks light and the alternator are linked i reckon the battetry wasnt charging because id blown the fuse for the dash. if the blue wire is disconnected or i pressume the circuit is broken (fuse) then this explains the flat battery. upons getting a good earth/bulbs/holders and fuses the battery is now holding charge despite the cold. a 10-min blast should have replenished some charge. hth, sounds like your problem could be the same.