Antenne Wires
In short... Yes.
I mounted a similar set-up above the LHS sun visor. Located the entirety in the map pocket space. I ran all wires inside the "a" pilar to the fuse block located under the steering wheel [NAS]. I was able to pass the antenna wires through the firewall [bulkhead] utilizing an existing hole with a new grommet. After drilling a small hole through the plastic fascia cover along where the wipers park, to the exterior. I then placed the antenna wires in a plastic loom to the roof rack where I attached the appropriate antennaes.
Have fun.
1990 RRC, 3.9L, AUTO "Willow Pond" (Sold)
1996 D1, 4.0L, AUTO "Lucas"
1999 RR, 4.0L, AUTO "Belle" (Sold)