2007 T800 Kw tail light back feed

[mj9770]

My dad has an 07 t800 and so does the neighbour down the road. They both do it. Was told by Kenworth that the load on some led lights is not enough to fully get the relay to shut off, and sudgested to switch to non led tail lights or add a resistor. I think some led tail lights have the resistor built in. Not sure would have to research that.