Just like when i first go the pajero which got some unknown wiring. It already has front spotlight. We went on to add additional fog lamp to the front, rear spotlight, power height adjusted seat from Honda SM4, twin aircond fan, and some other equipment so u can image the added mess.
End up buying proper relay socket and fuse socket, arranging it in a row and at place it wont disturb access to other component, labelled them, properly taped them with wiring tape. Its better now.
I prefer wiring tape as the plastic casing will rot over time.