Dobule posted on cougar forum.
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I took the cougar down to get the keys programmed with my ECU, but the dealership told me that they couldn't get the keys programmed correctly. They told me they didn't know what was wrong with it and gave me a list of possibilities which included: Ignition switch, bad wiring, fuses, or anything from bumper to bumper. Its really frustrating and I don't know what to look at. Heres the specs on the car.
SVT ECU
3l swap with SVT parts
24# injectors
return style fuel
fully updated tranny
Here's what the car does:
I put in the key and all the components (turn signals, wipers, heater, etc) were working. I turn the key and the gauges go blank and nothing happens. The speedo and tach gauges goes all the way up and back down when key is reinserted like the computer is resetting and there is a beep.
The security light that is on the dash (near rear defrost button) does not flash at all. Even when the key is out. The guy at the dealership told me that this should be flashing.
Any help would be greatly appreciated since I don't know where to begin at all. I'm thinking that it is either a bad ecu or possibly some sort of ignition problem.
Link to ECU 
