I'm looking to install led light strip into the back of my 51 plate partner van. I have the light here and it has the 2 cables red and black. I have the connectors that need to attach it to the wiring of the interior light already in the back but I don't have clue which wires they connect to. There are 5 wires on the light unit. I think 2 pink ones a brown one, yellow/green one and I can't remember last colour. Anyone be of any assistance? I want it to come on when I manually switch the light on.