Take the second jumper wire and connect one end of the jumper wire to the positive wire from the fan . Extend the other end of the jumper wire over to the positive terminal of the battery. When the wire touches the positive terminal of the battery, the fan should come on.
How do you connect an electric fan to a car battery?
Connect the inverter’s positive input clamp (red) to the positive battery post (+) on the automobile battery. Connect the negative input clamp (black) to the negative battery post (-) on the automobile battery. Turn the fan power switch to OFF. Plug the fan into the power inverter.
Which wire is positive on a radiator fan?
87 (red wire) connects to the positive wire on the electric fan. 30 (other red wire) needs constant 12-volt power from the battery. 86 (gray/white wire) goes to the ignition switch. 85 (black wire) connects to the temperature-controlled sending unit.
Can I hardwire my radiator fan?
A radiator fan requires an average of 15 amps to operate. ... You need to hard wire the radiator fan to a toggle switch on the dash in such a manner that the fan will shut off when the ignition key is off. The fan can also be turned off manually when cruising to extend the life of the fan.
How do you bypass a radiator fan?
Yes, technically your engine does not need a cooling fan to operate . ... If the radiator does not have cool air blowing on it constantly, it will overheat eventually, so you’d need the perfect combination of weather and traffic to drive effectively without a radiator fan.
How do you wire a radiator fan to a switch?
- Locate the positive and negative wires on the cooling fan. Cut both wires and strip 1/2 an inch of insulation off of the ends of the two fan wires.
- Connect one end of the 12-gauge jumper wire to the black ground wire of the fan.
Should radiator fan turn on when AC is on?
Both radiator fans should always run when the AC compressor is engaged. To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Most fans should come on when the coolant reaches about 200 to 230 degrees .
How many amps does a radiator fan draw?
Power draw: The more powerful a fan is, the more current it will draw from your vehicle’s electrical system. Twelve- to 16-inch fans can draw from 15 to 28 amps , while some dual fan applications can draw up to 35 amps. Make sure your electrical system can handle the addition of an electric fan.
Do I need a relay for electric fan?
Most parts stores carry toggle switches and/or push-pull switches that will handle anywhere from 30-60 amps , so that would work. If you’re using one of those thermostatically-controlled deals (or a low amp rated manual switch) you should use a relay.
Can I drive without a radiator fan?
Yes, technically your engine does not need a cooling fan to operate . ... If the radiator does not have cool air blowing on it constantly, it will overheat eventually, so you’d need the perfect combination of weather and traffic to drive effectively without a radiator fan.
At what temperature does the radiator fan turn on?
Your radiator fan should kick in at about 200 degrees Fahrenheit . If you notice your vehicle is overheating or at the very least running hotter than it normally does, listen for the fan to see if you can hear it.
How do I manually turn on my radiator fan?
- Cut the power and ground wire at the fan harness, leaving 6 inches or more to connect new wires. ...
- Install the four-terminal relay to a solid mounting location as close to the radiator as possible. ...
- Attach a spade-end crimp to one end of a 16-gauge wire.
Is an electric fan better than a clutch fan?
When compared to an electric fan, fan clutches are quite inefficient . ... The benefits of a Thermatic Fan lay in its ability to provide constant air flow, improved fuel economy, better air-conditioning performance, cooler engine running and increased engine power.
What are the symptoms of a faulty cooling fan switch?
- The engine runs hot or overheats. ...
- The cooling fans don’t work. ...
- The cooling fans keep running. ...
- Warning lights. ...
- Poor air conditioning performance. ...
- Swapping Relays. ...
- Measuring the Relay Coil’s Resistance. ...
- Listening for Noises.
Where is the radiator fan?
The radiator fan is positioned between the radiator and the engine , and is in charge of cooling the car. These cooling radiator fans are especially helpful when your car is moving too slow to obtain external airflow, or when you are stationary, and air can’t move through the grille.
