RL80C upgrade to axiom

[jdreid3]

Chuck,
I have decided to replace everything. I will have 2 axiom 12 screens (one with sonar), ACU 200 autopilot, quantum radar, P70Rs control, RMK-10, and EV1. I plan to keep my transducer from the L760 and my GPS antenna. I have read where you have indicated that an HS5 is necessary. I have also seen wiring with a standard seatalking backbone without an HS5. The question is, what do i need to buy for the backbone to connect the above equipment? If I need the HS5, what should be connected to it or should everything? can some of it be connected to a standard backbone cable? I cannot read anywhere that RMK-10 is compatible with axiom. Can you confirm? Can I use the RMK-10 to control both screens?

Will the A80489 Adapter Cable plug into the backbone or directly to axiom?

If you can help me with exactly what I need to connect everything above, I can get this done. it has been quite a learning curve and I don't want to make any mistakes. I appreciate all your help so far!