Need a little help with washe install

[fatcatzzz]

Wife and I will be picking up our new Montana 3720 soon and I will be installing a new washer and dryer. I have installed washer and dryers in other 5th wheels with conventional installs ( closet, stackable, etc.), but have not installed in a slide. My question is about the drain-pan drain. Where is the best place to tie into the washer drain? Before the flex drain I would assume. How do I access the plumbing? Any help would be appreciated.
Thanks,

[chuckster57]

I sent you a PM.