Thought I would make a thread since I never found one that addresses the fuse location for the 4.2L engines, or at least in my 2006 XK8, the fuse for the fuel pump, actually the fuel pump module, is in the boot/trunk fuse panel, fuse #5, 30 Amp, I believe it is green.

Hopefully now, if someone is searching for this info will find this thread and not have to dig-out the Owner's Manual.

Later