"A problem I was worrying about was how to get this large plug thru the firewall, without cutting a large hole in the stainless steel firewall. I finally figured it out, take off the backshell and folt it up like this, and it will fit thru a one inch round hole! A standard grommet will then go in the hole covered with the stainless cover. Been feeling pretty poorly, was at the emergency room Friday, got a case of pneumonia and some other sort of infection, don't feel like doing anything."