Originally Posted by Hightower
Use the relay, the high amps will quickly kill the switch off.
Relays are a good idea to protect switches, but to keep it simple would seem the best way to go.
If you use a Carling switch which are rated to 10 amps please see the link below;
I bought some from these guys.
I very much doubt that the Fog horn will be any where near 10 amps.
Hopefully this may help.
OOOP's is it 15 amp......smoking carling switch!!!!!