I have a fluid leak in the rear break line. How do I get to it?

metal lines run along inside frame rail ,you can splice it,go to parts store get a replacement line and hookups,easy to do.

Is there a junction or a splitter?

NO,just cut the line the same leingh as replacement line,their are fitings that come with it that connects them together.

there is a junction block right rear in front of the fuel tank the line goes along the fuel tank and over the rear sub frame then to the right side wheel or if its the other line it goes to the other side they both go along the fuel tank and when they cross over the sub frame the go to the wheel You have to reroute the line on the outside along the fuel tank

I just replace the right rear one last week

Thank you very helpful we are replacing both of them and its very tight

forgot to mention someting about the junction block the line closer to the outside of the car is the one for the left wheel and the one on the inside is for the right brake if you want your abs to work properly