Thank heavens, just took a look at Halfords and they have a 100 amp fuse on there. You're a saint, David, thank you.

Well, as soon as I figure out how to wire it all up, then I'll be able to do all the soldering and such... just need to make a circuit blueprint so I know what's going on as such. As soon as I got it all worked out on "paper" so to speak, I'll post it up on here and hopefully get feedback on it. But that'll have to be tomorrow, as it's way too late to do anything about it today.