ShannonSS-
First off, welcome to iRV2!
Second, you should add a "signature" to your profile. It contains whatever info you want; most people put info about their coach there, so they don't have to type it into each message. Instructions for adding a signature are
here.
Re: Storage on top the doghouse. I owned a "twin" to your Monarch, a 2008 Holiday Rambler Admiral. I made (too many) modifications to the coach, including removing the fairly-useless factory "holder" on top of the doghouse. In its place I used a Rubbermaid 3302-20 Front Seat Organizer. It appears Rubbermaid had discontinued that item, although there's one for sale on eBay at the moment (link
here). Any decent organizer will do. I stuck carpet protectors on the bottom to keep it from moving around.
I have wiring diagrams for your coach. If you send me a private message that includes your e-mail address, I'll send the diagrams to you. Don't "publish" your e-mail address in public here, or the spammers will get it. Instructions on sending a private message are
here.