Burning smell from Flasher Tube

[67ChevyRedneck]

Haven't driven the truck much in the past year or so. Mostly because the exhaust leaks were getting pretty bad (not the manifolds or donuts, actual pipe connections) so I kinda parked it except for a cruise here an there.

Got the exhaust fixed and been driving it to work every day.

This morning I had not blinkers. Really bad for the roads I drive on. I have to make a left on a super busy 4 lane road that has NO turn lane, so I'm a sitting duck if the car behind me isn't paying attention. Figured it was the flasher tube. It was. I tested it on the flasher side too and it didn't work.

I bought a new one that had the exact same numbers on it as the old one that was on there the past 18 years I've owned the truck. I put it in and it worked on the way to lunch and most of the way back. I went to make my last turn into work and I smelled a terrifying electric burn smell. I shut it down and the flasher tube was hot as crap (and blinkers not working). I pulled it out.

Is it possible I got the wrong one (even though the numbers matched - 552 12 Volt.) I don't get what caused it to burn up/fail so quick.

I have a brand new AAW harness that's been sitting for about a year in the box... I think she's telling me "it's time?"