4-way wire harness splitter for use with our transformers and lights. This splitter allows you to connect 4 lights. If you'd like to add more lights to your project, you can connect our splitters together for as many lights as you need. When you connect additional splitters, you will only be able to connect 3 lights because the 4th output will be used to connect another splitter. The last splitter in the series will have all 4 outputs available for connection. If you have open outputs, you can use our end caps #EZEC01 to seal them.