Kits to install the OEM bed lights are available on Fleabay for around $125. I bought one but was disappointed with the amount of light they put out . I went one step further and also installed a McTuning bedrail light kit from Amazon for $30. These are a great bang for the buck, good quality and VERY bright.
here:
https://www.amazon.com/gp/product/B01JUE9OLM/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1