Lift pump is on the rear of fuel filter canister held only two screws , Connector is on the bottom. The fuel control is on the rear of the high pressure pump. Type in fuel control solenoid (fca) for 2003 cummins on eBay it will come up. If you want my old lift pump that worked i will send it to you. mine was the early 2003 . My problem was starting and it was bad injectors. Let me know