I borrowed a manual last night. Bentley Service Manual 2005, 2006, 2007, 2008. Editorial closing 2/2008.
Controls
SA6 fuse 6 on panel A
SC4 fuse 4 on panel C
SC16 fuse 16 on panel C
SC40 fuse 40 on panel C
SC 46 fuse 46 on panel C
Fans
SA1 200 amp Fuse 1 on fuse panel A (may appear as a solid wire, probably it is a fusible link - this is main power in to the fuse panel A from the alternator.
SA3 50 amp fuse 3 on fuse panel A
SB24 10 amp fuse on fuse panel B
Fuse Panel A and B are located engine compartment left (looks to be outboard the battery), B is the top surface with low amperage fuses, A is the front surface with high amperage metal strip fuses.
Fuse panel C is outboard on the left side of the dashboard.
Some of this control power comes through the J317 power supply relay
The location description for J301 (the Climatic system A/C system and heater control module) is "A/C and heater control panel in center dashboard". It is NOT shown on the referenced figure.
You do have two fans up front, right? Engine code BRM? If not, then the fan fuses differ.
It looks to have 3 connectors on it, a 5 pin, a 16 pin, and a 20 pin. It is too big to be mounted in a relay panel, in all likelihood.
The fans should be turned on, via the ECU, when the G83 radiator temperature switch actuates.
It looks as if all the fan commands come from the ECU. So even the AC controls have to send signals to the ECU when it desires the fans to run.