Thats an awesome description of my work Paul well done...
it is quite simple to do if someone is wanting to tackle it themselves, Paul has described where the wires go and the fuse box is simple.
Bodger with all this snow it might make it virtually impossible to do the retro fit but if you want to do it yourself ill give you my number if you get stuck I can give you advice over the phone
If it clears up by next week then I'm free Friday
Cheers
Darren