Originally Posted by Crius

If it were me I would just go ahead and get the upgraded board. The kit only cost $40, comes with the transmitter and the new board and the speaker, and then it not only gives you sound but also turn signals and it has a circuit to add a winch. That's the circuit I used to power the ramps on my tank Hauler Trailer. It still looks and feels kind of toy-like but it actually performs rather well.