Well I'll try the method of disconnecting the battery first before having a go with the wiring.
If it worked on Corbo's (Thanks for the tip!) by simply firmly re-connecting the yellow leads (Is the connector yellow too please?) then maybe its a case of doing that, perhaps cleaning the contacts with meths and a cottonbud stick first, then re-connecting and putting the leads back on.
Sounds the most simplist and hassle free method so far.
Worth a go.
If that doesnt work I might solder them.
We'll see I guess!
robk147, so if you paid £50 last time and found it was the connector, then if you have the same problem, did they actually fix it and now its gone wrong again or did they not fix it just tell you?
Also, I have been messaged by another member recently - why I started this thread, asking if I had found a definitive solution.
They have found one and I hope they don't mind me quoting it here-
"I ended up crawing under the seats and un-plugging all of the cables and then plugging them back together again with a cable tie wrapped round them. Light hasn't come on since. Cheers. Mark."
So I'll try that, not sure if he took off the battery leads beforehand but I think I'll do that just incase as I don't want to deploy the airbag accidentally!
By the way, has anyone here after reconnecting the battery had any imbilser or radio code problems?