wen i turn the key, i get flat battery effect, i use jump leads off my gf clio an it starts, wen i turn lights on or put windows down it cuts out, so i tighten the battery bolts that hold the wires on an the positive was slightly loose, so i jump start it again, leave it running wiv lights on, windows go down an it still running, then i turn it off for 1 min, then turn the key an its dead!! any ideas as i start new job 2morrow which is 15 miles away an it requires me driving about an parkin up 4 a bit (windscreen technician) an fixin cracks in peeps windscreens, my boss wont b impressed if im stuck sumwere, plz rs lads i need ur help any ideas a.s.a.p im desperate an need sum ideas,