my understanding of the wiring loom

[Saviour]

Hi and a very good day to one and all.
From my understanding of the wiring loom for the front spot lights, (9000 T CS )there are two fuses, one by the relay in the main relay box under the bonnet, the other is a question mark, Has anybody got any ideas where it lives? There does not seem to be a space within the main fuse box inside the car on the near side passenger well.
Andy

[Saviour]

Also added to the to the above.....now at the fuse and the cable conection with the spot lignts I get 4.9volts, when the switch is ON or off , any ideas why that should be? when the swtch is pressed in and out you can feel/hear the realy swtching by the way. but I cannot understand why I only get 4.9 volts, the multi metter is caled OK, I checked that aganst 12v, 9v & 6v all read fne.
TIA