Wilson

my problem is that when I put the ignition key the wait to start and the primary pump does not work then the engine starts but does not run it is an electrical problem I checked all the fuses and the relays and all correct I am  in contact with a Cummins mechanic I got the wiring diagram of the engine but I need the wiring diagram Holiday Rambler Scepter 2008 to be able to find the problem Thanks again for your precious help

If you can send me the link it would help me a lot thank you

Following my ISL 400 Cummins engine problem I managed to get the Cummins wiring diagram but here I would need the wiring diagram of the motorhome a Holiday Rambler Scepter 2008 how to find it Please help me