I replaced the 6 pin beacon plug with a 4 pin plug. ( Beacon,Nav.Sync.Gnd ) I will not get confused with the trim plug as it is a six pin plug. I removed the paint from the VHF antenna rivnut heads for a good ground contact. I have been having issues with the GTX 35R not sending data to the G3X. BDH may help in the next couple of days, he is very good with electrics.