My hazards haven't worked for at least 20 years. Every time we tried to use them, they blinkers would stop working for a day or so. LOL. When we smelled burning wires, we pulled the module.
@Conozo, it seems like any time the electrical system is going weird, the grounds are the culprit. I was going to upgrade my grounds until I realized that it was going to cost somewhere north of $0, so I cleaned up the contacts as an interim measure and it really worked well.