I want to install an eyelet ring quick connect extension directly to the battery posts of the battery under the seat of my Transit 350 cutaway chassis (motorhome built on the chassis). Then I will plug in a solar battery tender to the quick connection while my motorhome is in winter storage. But I cannot find video or picture instructions that look like the set up that is under my 2018 350 cutaway chassis driver's seat. Can anyone here assist me? Thanks.