Seems we have have the John's on this....
To your first question, I have had the campers apart and the coax cable from the power booster down in the wall up to the Wineguard antenna "most" likely will not pull out all the way for a total cable replacement. There are two issues.
1. Pending the floor plan, they drill holes in the wall stud and then up into the attic. The one going into the attic is on an outside wall and they fit in a metal conduit sleeve in the drilled hole in the wood. The metal sleeve helps siding staples or screws from cutting the cable. That wire goes up the wall, through the conduit, and then a 90 degree turn into the attic is going to be a large catch point. Odds are likely. any new cable can have the insulation damage trying be pull up through that metal sleeve and turn hard 90 degrees into the attic.
That is, if you ever pull out the old cable even. Some floor plans have the cable pass through a few wall studs, again with metal sleeves going horizontal until they turn and go up into the attic, again through the metal sleeved hole.
2. The cable staple OR cable clamp. It depends on the floor plan and the routing if they add clamps. Some have them, some do not. It all depends on if the cable is sagging enough with the routing if they will add a clamp.
I'm not saying your T2475 cable will not come out, I'm saying odds are favorable it may not come out, and if you get it out, the new cable may be damaged trying to feed it back in through all those holes, assuming there are no clamps. I have pics of these sleeves in the wood at the attic if you want to see what I'm talking about. I'll hunt one up.
I have a 2004 T2475 as a project camper. I'm not sure if the roof antenna is in the same place as yours. I will look later today at where mine is mounted, where the inside power booster is and then maybe a way you can fish a new cable up there in a different manner then the original.
I'll be back, tell me where your roof antenna is located, that can help confirm they did not change the possible routing between 2002 and 2004.
Hope this helps
PS. As JohnnyB good said, I too did a total roof re-wire in the Wineguard metal arms and new boots replacement, and a new coax fitting in the ceiling, but there was enough wire for a splice in the ceiling. Did not have to pull a new wire through the camper.
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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