They are only 12V lights, your 240v only runs battery charger, HWS, Fridge, AC and power points.
I identified the type of LED's needed and bought online with a couple for the outside from Supercheap, buying from van shop or lighting shop the price of one will break the bank.............. I had a link to a great page which Identified and named the various socket/globes just can't find it, but you must be sure of the type needed, ebay buys have been good for me, though some LED's can cause interference on TV or radio but price or place of purchase doesn't seem to have a bearing on that.