After reading many articles and reviews I came across http://www.webbikeworld.com/t2/neutrino-black-box-v2-review/which is basically an intelligent power distribution and control module. Controllable via an app on a smart phone.
Here is the link to the manufacturer’s web site: http://www.arborealsystems.com/Arboreal_Systems/Neutrino_intro.html It seems suitably techie for me and also means not hacking into the bike’s wiring harness other than for 1 cable.
I’ve ordered the box and the additional USB socket so I can charge my phone if necessary. Hopefully I’ll get it before this bank holiday weekend!
Alas, it didn’t come in time for the weekend and I’ve just had a card through from the post office saying I need to pay them £38 in VAT and handling…. I will get it on Friday 3rd now.
I’ll hook it up to the battery then all the accessories will run from it.
Fri 3rd: Hooray better late than never I suppose