I have a 2003 Jetta TDI, it has sat for years unless I spray some WD-40 in the intake continuously. I have primed and bled the injectors, changed the fuel filter, and I changed fuel pump. I don’t believe I'm getting power to fuel pump or enough power, I think I need 12 to 13 volts and definitely not getting that. Being that it sat for awhile I am thinking wires may have been chewed but I don’t know what wires are going from engine back to the fuel pump under the backseat. If anyone has any ideas, thoughts, or anything to help I would appreciate it Thanks.