I am running a Spektrum SR300 3 Channel receiver in an 1/8 E-buggy. I have a capacitor plugged in the aux port.. How am I gonna hook up my transponder? Bind port? Any help would be great thanks

Bind port will work fine since the transponder only uses the + and - . It only tries to bind if there is a short between the negative and signal post.

I have a PT plugged into the bind port on two of my cars' receivers because I have a cooling fan plugged into the aux channel. Definitely works fine.

thanks