Trying to transfer data/info like radar from the NavNet to the GP. The units are mounted 2" apart with the NavNet on the starboard side. The cable you mentioned is about 4-6" too short.
One other issue is the NavNet has a hard time picking up a signal and when it does, time date ect is correct. Soon as the signal is lost it reverts back to factory /demo mode. No other GPS units on board . Would a auxiliary antenna eliminate this and if so what do I need.