New Candelabra 3 Light Socket Harness 7 Inch Center By ADL Model D450. CB 7" Centers With Phenolic Rings SPT-1 18/2 Brown Wire Rings Included Lite. This replacement light harness is used in fixtures that have sockets all connected to each other and can be joined together to form multiple socket fixtures. This item retailed for $8.00 dollars apiece. I am selling 3 for $6.00 dollars apiece.