- Joined
- Jul 5, 2014
- Messages
- 2,776
Ok cooling fans for the 55 chevy. Have 2 fans, larger one for the radiator, smaller one for trans cooler.
I'd like to have both fans come on at the same time, hence the reason for the 75 amp relay.
So I'm thinking a 12v key on source to turn on a 75 amp bosch relay that is supplied from terminal block directly from the battery. This would supply power to a second relay when the ignition is on.
Second relay is fed power from the first relay and used to turn the fans on, and is controlled by an adjustable temp switch.
Reason I'd like to use 2 relays is so that the fans operate only when the key is on.
I know it will work, but using a relay to power relay? Just seems weird to me for some reason.
I'd like to have both fans come on at the same time, hence the reason for the 75 amp relay.
So I'm thinking a 12v key on source to turn on a 75 amp bosch relay that is supplied from terminal block directly from the battery. This would supply power to a second relay when the ignition is on.
Second relay is fed power from the first relay and used to turn the fans on, and is controlled by an adjustable temp switch.
Reason I'd like to use 2 relays is so that the fans operate only when the key is on.
I know it will work, but using a relay to power relay? Just seems weird to me for some reason.