I am working on a truck, a 01 Dodge ram automatic,209000 mi. with the magnum v8. The owner was told it was likely the crank sensor, if you crank it over long enough will act like it might start but does not. I replaced the crank sensor and nothing changed. He said there was a red light on the dash that came on and stayed on when the starting issue occurred. I found this light is part of a aftermarket alarm/anti theft system, I removed the alarm kit and reconnected the interrupted wires, however there are five wires that had pinch on spade terminals, like you see on trailer light wiring, all the wires there seem to have continuity, the fuel pump kicks on, I have not tested the fuel pressure, have not tested ignition (did not have the tools with me, will do all that tomorrow after work). just looking for some pointers and or common starting issues that may be specific to this vehicle. As always, any advise is greatly appreciated.