I am building a GS P-51; I will be using the 'Power Expander Sport Plus' with two 6 Volt NiMh packs for Reciever/Smart Fly Panel; I will have 2 manual switches, one for each battery in a fuselage compartment, so I can actually cut off the battereies to the Reciever/Smart Fly Panel; I will also be using the Pin/Flag Fail safe switch. The problem is the Ignition battery, which will be a single 4.8 NiMh pack located in the engine compartment; I would love to be able to install a 3rd switch in the Fuselage Compartment, to be able to cut off the battery to the Ignition Module; however, I don't want to run a chance of any radio interference by having the wires running from the engine compartment to this switch; is a manual cut off switch for the Ignition battery nessesary, I am trying to eliminate any unsightly switches on the surface and I don't want to have to build another compartment, I plan on installing a small charge port up front to be able to charge the ignition battery without having to remove the cowl; if an actual mechanical Ignition ON/OFF switch is recomended; can another Smart Fly Pin/Flag switch be some how modified to be used as an ON/OFF switch; as it is extremely unobtrusive.

Thanks, Doug.