Seems like a lot of effort when you could buy this from Asda for £4 and use it as is or modify it:
There's no proven cases of leaving tracks connected causing problems, although it doesn't do any harm and the chances of anyone wanting to play a regular tape in future are tiny. Hooking up to the Nurrish Sat Nav seems to be an issue but cutting the tracks makes no difference.
I am going to wire up a phono socket as what Alex has used, for my mp3 player/blackberry and also get this from Adsa and chop the plug end bit off and hard wire it in so I can charge my satnav and other things
I will place this in the cubby above the HU
Only trouble with that idea Pimm is when you remove the charger socket yours removing the fuse aswell....
Up to you but I have used a quick fuse in my setup because I dont want my £500 phone blowing up lol...
Agree Alex, just looked at your page 9 now that I am back on line after 4 days of AOHELL
I will put a inline fuse in my Asda purchase so not to have any issues when charging ect...
I will keep you posted and by the way your pictures are spot on mate