Jessepenn-
We have a 2012 189 FBS and I have done waterline repairs and modifications near the pump under the bed. When I replaced a malfunctioning pump, I moved some lines around to take the stress off a poorly-plumbed factory layout. The waterlines used in our model are normal PEX lines using factory clamping. In Southern California, both Lowes and Home Depot carry a fairly complete line of PEX lines, fittings and crimping tools. I use the copper crimp ring system with barbed brass fittings, although the other clamping systems probably work fine too. This required the purchase of a copper crimp ring tool in addition to the pipes and fittings. The PEX can be cut to length easily with the same tool used to cut PVC pipe and the pipes come in red, blue and white.
By the way, one thing I did not do during my last repair and will do in the near future is to add an accumulator next to the pump to quiet the system. There are others on this forum who have done this with good results. See link:
http://www.amazon.com/SHURflo-182-20...A1OTHLCYHK9AS8
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