This type switch was used on most 1949-1952 Spartan and Spartanette trailers. If you are upgrading your electrical system, these are a must have item. You certainly don't want an old switch to short out and cause a fire. These are black, where the original ones were dark brown. They have terminal spades and are single pole single throw switches. They push in to the original Spartan switch plates as shown in last 3 photos. Switch plates do not come with switches.