I'am confused about a wiring issue. its a common thing to use shielded wire on any thing carrying data, (rs232) My question is why all the skyview dynon harnesses does not contain anything shielded. for an exemple i have a SteinAir drawing and the wires for the transponder requires to be shielded but the harness i got for it direct from dynon does not have any shielded wires. which route should i go?