Welcome to FiberglassRV Michael! We're glad you're here
You've come to the right place, lots of helpful people on FiberglassRV
We've found these little trailers are more alike than different... so electrical
, plumbing and propane
(etc.) is just all about the same... just depends on how indepth you wish to go and what manufactured product you care to use.
My suggestion is to post one question at a time per topic... under the Problem Solving forum, then sit back and watch the replies roll in.
BTW: I saw my first (and so far only) Havasu
at the Oregon Gathering last year... neat trailer!