I know I've seen a thread on this also, but haven't found it yet. The thing I remember sticking out to me was to ensure (when adding wire to reach up to where you want them) that you leave slack enough to allow for the ROPS to fold.
Yup, when I added my Peterson floods I ran the loom down the back of the ROPS for that reason even though I never fold it down now. True story - before I built my garage with 8-foot tall doors I use to store the BX in a Shelter Logic shelter so I ran all the time with the ROPS folded to clear the door. The garage goes up, I put the ROPS up for good, I sell the shelter and the next day I drive the BX into the shelter to help in dismantling it. Oops! You idiot! One small ripped seam but the purchaser didn't care. Phew.