Welcome MrZyian!
Congrats on your new Sunny!
On the plumbing, which plumbing? The freshwater PEX piping (red, blue, and white hose inside the camper) or the black ABS drain plumbing inside and under the camper?
We are not sure what you are up against. You mentioned it is "completely replumbing." That could be a big task, depending on the problem. Anything can be fixed or a workaround created, but we need more information about what happened and which pipes need to be repaired or replaced.
Also, please provide the model number. That helps us know which floor plan you have and will come in handy trying to explain the fix for your piping when we know which piping. The model number on a 2005 can be found on the weight tag inside the camper. Open the top cabinets and look at the kitchen's inside doors first and look at the door; if there is no tag there, then try the bathroom top cabinets and medical cabinet or bedroom cabinets.
The model number was also on an engraved black with white letters tag next to the entry door stuck to the siding if it had not fallen off.
Hope this helps.
John
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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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