I have a 55cc gas engine with Rcexl ignition. The ignition has a tach or rpm sensor plug wired in. My question is can I use this plug to connect to the Spektrum Telementry system? If so do I need anything other than suitable connectors? I know this a crossover question between radio and gas engines but I feel theres a better chance to find someone in this forum with the answer than in the radio forum. Thanks for your help..........Jim