It appears that the "Accessory" portion of your
Ignition Switch is inoperative. What this means is there are 3 various positions on your
Ignition Switch, Off, Run and Start. Your "Off" position (from what I gather) is working as it should. The "Start" position is also working in that it sends a signal to your Starter and your Engine Starts up, however this is where the problem occurs. When you release the key from the Start position, it automatically returns to the "Run" position, which ALL your "Accessories" are supposed to remain "On." This tells me the "Ignition Switch" has malfunctioned. This isn't actually where the key is inserted, most cars have a rod going from the Key area to a switch down on top of the
steering column that engages various switches and contacts within the Ignition Switch. Some car manufacturers have the Ignition Switch held in with two 8 mm nuts or 5/16", that allow you to slide the
Ignition Switch so that the Run, Start and Off positions are in-line.
I would obtain a Haynes Manual for your particular car and this will show you "How to replace or Test your
Ignition Switch." To do this without a "Service Manual" will be almost impossible and the Haynes Manual has a section in the back of the Wiring Diagrams of your vehicle. To further diagnose your problem, take a test light or volt meter and when the car is running, ALL the fuses should be "hot", or register voltage or light up the test light...except for the parking light fuse unless you have the lights on while performing this test. If you have No Voltage to your Radio, Fan Switch or anything else, then it's the
Ignition Switch caught in-between the Start and Run position insofar as not allowing the 12 volts to power the Accessories in your car.
I hope this helps in resolving your problem. Please feel free to update me at anytime.
Sincerely,
"00 Buck"
"Still living on the Right Side of Dirt..."