All fitted and working. I wired the torch and socket to the same power supply on the fuse box in the passenger footwell. I put a usb adapter inside the accessories socket so will only be used on low power say to charge phones etc. Both accessories are protected by a combined 7.5A fuse.
I was careful to lay the wires and fixed them to make sure they do not interfere with the handbrake mechanism.
MG ZT info mods and maintenance 