Four way flashers

I have switched over to these flashers. They have an adjustable flash duration. But they do quit every other year or so. So I keep spares here
3 Pin Adjustable LED Light Flasher Blinker Relay For Turn Signal Indicator 12V
3 Pin Adjustable LED Light Flasher Blinker Relay For Turn Signal Indicator 12V | eBay
If you go to the LED lights, the power level used by the lights is not large enough to operate the old time flashers