GPS Question

[Pcguru_gary]

2003 380 Sea Ray Dancer

Equipment
- RL80C PLUS PATHFINDER CHARTPLOTTER W/RADAR ARRAY
- RN300 GPS
- ST7001 AUTOPILOT CONTROL HEAD
- SMARTCRAFT DISPLAY
Don’t currently know which transducer is in the boat for depth or sonar. It is original to the boat.

SCENARIO:
1. GPS is connected to RL80C for satellite fix.
2. Radar, Autopilot and fishfinder data is displayed on the RL80C

ISSUES:
1. RN300 GPS screen burn in & not readable. Unit cannot obtain a satellite fix. Want to replace.
2. RL80C interfaced with RN300 GPS – neither GPS or RL80C can obtain a fix.

Questions:
1. I’m looking for a unit that has an internal antenna to replace the RN300 GPS. The replacement units primary function will be to provide satellite fix using it’s internal antenna and to interface with the RL80C. Does Raymarine have a solution that will allow connections to the RL80C so RL80C will still provide working radar, fishfinder and autopilot functionality?
2. What upgrades, if any, will be required to make all the systems work?
3. Will my current C Maps from the RL80C work with the unit you suggest?