I made a rev limiter by using a 5V SPDT relay on motorcycle between the CDI and ignition coil. The relay works fine. However, the NC contact tip wears out very fast.
I added a 1N4007 at NC and COM to protect the contact pin, but the voltage still passing through from NC to COM although the COM already switch to NO pin. So this method is not working.
Am thinking to add an RC snubber to the relay, but wondering whether it will have the same problem as above.
Should I replace the mechanical relay with an SSR instead?
This is the relay that I'm using now:
This is my current schematic.