Fleetwood products often have a 12V control-and-fuse box call a "BCC" (Battery Control Center). It's separate from the two Ford fuse boxes, although the BCC does get some signals from the Ford side. You will want to become familiar with the BCC in your coach. Here is a link
to a Google search of iRV2 posts in the Fleetwood forum with the term "BCC" in them. Note: There are different versions of the BCC, so be sure to download the correct documentation for the version in your coach (other documentation may suffice, but may be different in important details).
Also, 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