My Dodge Ram 2500 5.7 does not start the key

I have a problem with my Dodge Ram 2500 5.7 truck does not start with the key but I do directly if you start I need help for FVOR

Hello,
check if there is continuity in the cable that goes from the key of the key of the key towards the ignition, they must be two cables, one that goes to a resistance of 5 ohms and another that goes to another resistance of .5 ohms if any of them do not have cntinuidod is the reason why the engine does not start. It could also be the double resistance, some D are open and pro which does not start the engine. When you make a direct bridge, it starts because you jump your wiring and resistances that prevent all the voltage from the ignition box, which can cause at a certain time to stop starting definitively by any method. Thank you. My son also has a 1990 Charger model, although the admission system by computer was modified, I made the system leaving the carburetor but without variation in the spases leaving it slightly punished so that it does not consume so much gasoline, finally when they open the secondary butterflies it continues to give power to the engine.

cousin of what year it is and if it is at or mt your problem is simple but thickens your failure and vehicle data I am an electrician and electronic if I tepuda help in something but I need more data because if it is MT I may only turn on a clutch and if it is AT in some models depending on the year it starts on a brake

Hugo very well, the year is lacking and it is also important if when you find the key it makes any noise or something or simply does nothing.

How are you .. has it to turn it on in neutral? If you turn on your transmission switch neutral, and if it doesn't probably turn on your ignition switch ... you miss