I purchased this radome several years ago in a package deal with the e7d MFD.  Never got installed due to mast bracket issues.  I am now installing a new breaker panel and want to get the radar functioning.  When I began to look at the wires and cables I realized the radar cable is a Seatalk hs and the e7d has always been a Seatalk ng socket ( 6 pin) plus the Network socket ( 10 pin).  I believe the 10 pin socket if also referred to as "Raynet".  My intention is to make the connection in a cockpit locker from the mast cable to the display and the power source for purposes of dropping the mast in the winter.

1) The cable ends all seem to be covered with a heavy wall clear shrink tube.  Is it proper to strip this off completely to make connections ?

2) I am intending to install the Seatalk High Speed Crossover Coupling in the cockpit locker.  Adding on the 1.5 meter E55049 network cable that came with the package won't do me any good here.  I need 9' to get to the display with an end that will fit the display.  A Raymarine tech suggested yesterday that I buy an A80160 16" adapter to plug into the 10 pin (Raynet ?) socket.  This would leave me several feet short.  Is there any reason why I can't use a Raymarine A80151 Raynet to RJ45 Male which is 3 meters long from the coupler to my display?  Any reason why I would have to use the 16" adapter that was suggested along with an E06055 Patch cable RJ45 to RJ 45 5 meters long ?

3) On the power side, I am intending to end the mast cable leads in proximity to the Crossover Coupler in the cockpit locker to a terminal block. I am now under the impression that I need a separate breaker for the radome even though the e7d display turns the radar on and controls the settings.  I am going to run the power lead to a 15 amp breaker on the DC panel.  A big caution in the owners installation manual is to power it separately from the starting battery.  This boat has only ever had one battery.  I am now adding a second "Starting Battery" as backup.  I have noticed issues of erratic behaviour with the e7d when we started the engine. The display would power off.  I am now at a loss as to how I would run power to both the MFD and the Radar from the house battery without them seeing the starting battery.  Is it correct that I can't power the breaker panel with a lead from the battery switch common (output) terminal ?  I am intending to run the boat with the switch on BOTH ( house battery and starting battery) to charge everything when running the motor and switch to "house" battery at anchor leaving the "starting" battery fully charged.  The only answer I see is two separate power wires coming from the "house" battery to the breakers for the MFD and the Radar probably with a fuseable device in each line.  Is that the way to solve this problem ?

I appreciate any input.  As we all know, it is a tedious job to rewire so I don't want to get it wrong or foster a problem with the radar that I already have with the MFD by powering the breaker panel off the battery switch.

Thank you all for your help,

TomW