Definitely! There were some...and as I recall some were designed with diodes to prevent folks from hooking them up incorrectly and frying them. Radio was an important one as I remember. Hook it up wrong and unless it had diode protection it was gone. Clock was another...in some vehicles it didn't like to be hooked up incorrectly and while it wouldn't kill it, it no longer worked okay. Heater motors/fan motors don't necessarily care. Some folks would claim coils were affected but others would say they weren't. My advice is: hook them up correctly and don't reverse the polarity. When you get down to basics, they're a step-up transformer.
Really all you're doing is changing the direction your electrons go but any solid state device or any device using discrete electronic components will NOT like this. An old explanation was "imagine you change things so that you sleep on your commode and then if you need to tinkle you walk over to your bed to do that."
Last edited by Jon G; 04/08/2024 3:19 PM.
