I have always advised the same
Restore all original wiring
Run a brand new RG-6 Line for the Sat Receiver.. Direct from a connection point (Bulkhead you add or in my case a ground block on the brake bell crank baracket) to the receiver and from the connection to the antenna.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times