[Rev]

My advice is to use a 30 amp relay to operate the fan. That way the switch only has to supply enough juice to trigger the relay. I use a 16" pusher and a 14" puller fan on my '66. That seems to do the job along with a 4 row radiator, Shelby front valance and an Edelbrock high output water pump.

I tried several different brands of electric fans from auto supply stores. Some only lasted 6 months of continuous use. I now use Hayden fans from O'Reilly, the ones with a lifetime warranty. These have been going now for several years with no problems. I use a seperate relay for each fan.

Rev