OK this is the first time in a long time that I want to run a car bone stock period. I have a dumb question. With the stock esc that came with my kit there are two rx wires. One for the esc channel 2 and there is a bec wire I think thats supposed to be plugged into the battery channel in the rx. Do I really need to use this bec plug? I does not fit into my rx. I really want to use this car stock. I don't have my batteries with me to test it. I am using a KO SS 2.4 rx.