Its a cheap fix if it works buddy, hope it works for you
The company I bought them from were very quick and sent next day...
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=231319010874&ssPageName=STRK:MESE:IT
and the other side
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=231318989959&ssPageName=STRK:MESE:IT
Thanks evom, I've checked the battery and its giving 12.7 volts static and 14.4V with the engine running, so next step is to order one of these which I've just done, I'll report back, fingers crossed, cheers.