it might be easier to get a soldering gun :S
not as accurate, but they are usually around 100w, so dont cool down as badly outside...
personally though, I would just use spade/bullet connectors and crimp them onto the wires with a good set of crimps...
Halfords have got 2 nice pairs at the moment
Made by Laser Tools
One similar to what Chris posted a link to, and
http://www.halfords.com/webapp/wcs/stor ... yId_165469
and the sort I use (easier to strip wires with)
http://www.halfords.com/webapp/wcs/stor ... yId_165469
Might seem expensive compared to the bog standard generic crimper/stripper/cutters you see, but they do make the job a lot easier...
I would recommend that anyone has a set of one or the other (or both if you can afford it

) in their toolkit...
I havent got a set of ratcheting crimps as I can exert more than enough pressure to crimp normal connectors...
Good luck, and glad it was something fairly simple...