Ignition switch problems!

[Yelcamino]

Hey guys,

I need some suggestions asap if possible! The other day I came home from work in my 71 Blazer, turned the key to off and the engine kept running like I didn’t do anything.

So, being the smart guy that I am, I went to NAPA and bought a new ignition switch. I installed it a few minutes ago, started the engine, let it run for a minute or two and then turned the key to off, and guess what? It kept running! Obviously the ignition switch isn’t the problem. I guess I’m not so smart any more!

Has anyone had this happen before and if so, what did you do to fix it? This is my daily driver so I need to figure this one out quickly! Thanks.