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Product Description
Version of the fog lamp switch with a hole for a small round switch, specifically the HEF356 rocker switch from Halfords which is also available from other vendors such as Vehicle Wiring Products or Car Builder Solutions (switch not included)
Its a small round switch with clips in the North and South orientation and small locating lugs in the East/ West positions. 20mm hole, 23mm bezel.
Personally I would use a black one but there are different colour options for people who have customised interiors.