[les korcala]

Hello,
I noticed after we upgraded our tail lights on our coach ( LED lights ) since we did rewired these , now out Tow car with magnetic type lights has only running lights ( no blinkers or stop lights )
I have 4 pin type connector.
my question is, can I just cut the wires open from Coach light cable , it has 4 pin type male plug & one by one connect to the female plug on the tow car's light and trace to get it right?

I am not electric skilled and don't want to burn anything in the coach , but I was thinking that perhaps is how I can match the right wires.
Or , do I have to re wired my car with totally different system.

The way we have had wire the tail light is that all 3 red lights will be on when running and stopping, before I believe it was only two.
Thanks you for any tips you might have.
We want to keep out tow car for long time and perhaps you might have some tips how to wire your car's lights for towing and eliminate the magnetic lights.
We are fultime on the road and i need to fix this problem.