Rojohn Soriano, Puyallup, WA, 1972 Dodge Challenger 318

Got an intermittent electrical gremlin I'm hoping you can help solve. For the last week, I've noticed that at times the accessories such as the wipers, rear defrost, turn signals, and heater fan don't operate when I turn the ignition key to "Accessory." At the same time, I get a "no-start" condition when I try to start the engine. In fact, the starter doesn't crank (the solenoid doesn't even "click"), the gauges don't operate, and the warning lamps such as the Brake Warning Lamp don't come on. However, any items not wired through the ignition switch, such as the lights, dome lamp, hazard warning, trunk lamp, and map light operate normally. I'm guessing it's a bad ignition switch and not a bad neutral safety switch since I've been able to get things to operate normally after a few attempts at reinserting the key, jiggling it, or just waiting several minutes and that the electrical accessories are also affected. Any thoughts on this? As always, thanks for your help!