My last electrical question was too easy - bike electric tricky one!

[richfzs]

Aye Paul, I got the bit about needing some on and off, but thought you'd want the "on" to be on whether the bike was off or on, and the "off" to be on when the bike was on and off when the bike was off. If you see what I mean :rollin

So what you're suggesting is ok for the trickle charger, but no good for the phone charger (assuming you want that to work while you're riding bike AND when it's parked up). 

Will try and redraw your sketch in a bit, so it'll do both.