Hard for me to remember the exact details.., but I had a very similar issue that knocked out my radio, blower motor, turn signals, (and maybe something else), and it was a problem ignition switch mounted top-side of the lower steering wheel column that from age deteriorated enough to cause a melt to the connecting brown wire, etc. There are a few
members that have made certain mods to this issue, but I can't remember those details either, lol. Perhaps they will chime in. However, a replacement model, and good connections would work.., IF:
If the forum members agree that that is your issue..; then consider the following;
It can be slightly tricky to replace the bad unit with a good one in that the long rod that comes down from the upper positioned Key Lock Switch must be installed correctly into the Ignition Switch. There may be a youtube repair vid that will be helpful. I am on dial-up, so I can't even bother to hunt that down in order to provide you a link, etc. Some repair manuals can be useful too. I had thought I had mine set correctly, but had to fiddle with it again.., errrgh, (*).
Here is a useful thought; Went to the parts store, and obtained a godless commie chinese slave labor replacement, and installed it. No worky. Second one worked, (*). Combined I had to travel 100 miles in order to fix the issue. Had I bought two switches over the counter.., I could either have a spare, lol, or had returned the other unused unit at my convenience, blah, blah, but took the bad one back, and got my money back, (hooray). Thing is, is, that if it is not an OEM part, but after-market.., it comes down to a crap shoot. You might try the stealership, or visit an auto junk yard...
My switch problem happened during blizzard time, and it was a frozen finger issue to deal with a couple of little screws, etc., etc., etc., so now is a good time to dig into it, lol.
The whole ordeal is not too much of a hassle in that you simply remove the lower plastic shroud, then remove 4 bolts in order to lower the steering column down a few inches in which to somewhat easily access the ignition switch.