LED Third Brake Light Question (ACLB)

Got a question for the lighting experts in here. I want to make the third brake light a cargo light as well. Think this may be a quick, easy way to do so with a clear lens. Whats available otherwise? Would hook the ground and red LED power to the existing wires and run the white LED power to the dome light.

https://www.amazon.com/dp/B01MDUDG0N/ref=cm_sw_r_cp_apa_i_faxJCb9765GR1

 

@crashnburn80

 

@mesojdm

 

I like the idea. You are on the right track, red to brake light and white to dome. The wiring should be very easy, mounting it in place will be the more challenging part, but assuming the dimensions all fit that shouldn’t be too difficult either.