| Electrical Fuel related problem
I have a 2000/ 2001 Sprinter 309, it's been sat up for 6 months and has developed a fault with the fueling system. It appears that mice may have damaged some of the wiring and so not all the electrics are working correctly. The Battery is charging from the alternator and the van will start with fuel already in the fuel filter but there seems to be no power going to the fuel pump as nothing is coming through from the tank. The tank and fuel pump have been checked and appear to be fine so i'm not able to establish where the problem lies, i'm fairly certain it's electrical but i don't have access to any wiring diagrams and neither do i know whether it's related to the ignition wiring or some other system, any help or suggestions would be much appreciated.
Many thanks | 
