I am installing a Roadmaster Even Brake system to my 2019 JLU. The instructions say that a brake switch kit is required because the vehicle brake switch is not powered when the ignition is off and the Even Brake transmitter needs a signal to transmit to the monitor. If this is the case do you have to use a break relay switch such as used in the 2017 Wrangler. t seems to me that with no power to the switch a relay cutting power is not needed. Any thoughts?