I'm getting my 14r streched and lowered this weekend. Got all the parts in now and when measuring the rear brake line for the new one i noticed there is another line piggybacking the rear brakeline all the way down and plugs in underneath it,it comes from under the seat area. What the hell is it and it looks pretty tight so i would think i need that longer to but never heard anybody say anything about it.What gives guys?? What is it and what do i do??