#7 cyl is passenger side rear most. The front driver side is #2.I can't disagree the trucks been down for over a year n a half. What happened is I had an injector go out so I figured put witch one first thing it was number 7 witch is front right of motor witch has a 90' so I got the new one also got the pig tail for it said that commonly the plug itself would go bad cause of the turn so y not change. Well the 2 shops I talked to one said the new one didn't need programming so tried it nothing changed in my misfire damn so I ran separate wires from the ecu to the number 7 injector still no change well me not knowing much about diesels got to looking under the dash well for some stupid reason I unplugged my alarm slash remote start unknowingly that's what it was well idk if when I plugged it back inn idk if I mixed wires or anything like that cause stupidly I didn't mark them and every since then it stop cranking by the keys and won't communicate with Amy scanners and we completely removed the alarm wiring from the truck even no luck so again any ideas help thanks in advance
Passenger Side: 1, 3, 5, 7
Driver Side: 2, 4, 6, 8
If you removed the remote start and now it does nothing it sure sounds like someone damaged wiring and has been unable (or simply hasn't tried) to find the point of the break. Any competent shop should be able to easily handle this job, either they don't want to do it or don't know how.