3 Complaints: 2005 Ford E-350 Electrical System: Wiring wwwomplaints›Ford›E-350›2005›electrical2005 Ford E-350 ambulance had a total engine failure while driving to a 911 call. The Ford dealership service center diagnosed a failure in the wiring harness as the cause and replaced it under1/5 I really need a wiring diagram for a 2005 Ford E350 Apr 24, 2017Hello! I really need a wiring diagram for a 2005 Ford E350 Ambulance Type III. Mechanic's Assistant: Okay, I'll connect you to the mechanic to see about that diagram for your Ford E150. Before I do, is there anything else you want him to know? E350*, but other than that, nope.