Dual Radiator Fan Wiring Diagram Wiring Diagram How to wire dual electric cooling fans. How to wire dual electric cooling fans.
Wiring Diagram For Electric Radiator Fan Wiring Diagram Step 3: install the electric fan relay. after wiring the electric fan to the proper power source, the next step is to install the electric fan relay. the electric fan relay is an important component that controls the operation of the electric fan. it acts as a switch, turning the fan on and off when needed. With dual cooling fans, there are two methods for wiring up the relay kit. this is based on the draw from the fans, if the fans are larger and draw more than 15 amps each, it's recommended to install a second relay kit as shown below. for smaller fans, both fans can be connected to a single relay as shown above, and the proper fuse should be. If you don’t get ground on pin 3, the ecm is not activating the radiator relay. that can be caused by a faulty engine coolant temperature sensor or a wiring problem between the ecm and pin 3. if you do find ground on pin 3, jumper across pins 1 & 2 in the socket. if the radiator fan runs, then the radiator fan relay is bad. replace it. Yes, you can. but it is risky. the electric cooling fan setup has a high amp draw on start up, which can blow the 30 amp fuse that protects the relay and wiring. most relays have a 30 amp fuse. if this fuse blows, the cooling system goes offline, meaning the engine will overheat. a dual fan setup with a large and small fan.
How To Wire Dual Electric Radiator Fans If you don’t get ground on pin 3, the ecm is not activating the radiator relay. that can be caused by a faulty engine coolant temperature sensor or a wiring problem between the ecm and pin 3. if you do find ground on pin 3, jumper across pins 1 & 2 in the socket. if the radiator fan runs, then the radiator fan relay is bad. replace it. Yes, you can. but it is risky. the electric cooling fan setup has a high amp draw on start up, which can blow the 30 amp fuse that protects the relay and wiring. most relays have a 30 amp fuse. if this fuse blows, the cooling system goes offline, meaning the engine will overheat. a dual fan setup with a large and small fan. Use wire connectors to secure the wires. connect the wires: connect the red wire of the cooling fan to the positive terminal of the power source and the black wire to the negative terminal. if the cooling fan has a yellow tachometer wire, connect it to the appropriate pin on the motherboard for monitoring fan speed. 30: constant 12v, unswitched 85: signal (switched 12v) 86: ground (completes circuit) 87: consumer (fan) 12v 87b: extra consumer (same as 87) 12v switched wire. may be green wire at a c clutch. note: or in an ’84 to ‘89 240 you may use the a c power ‘on’ wire: red white wire at ac switch microswitch in dash.
Radiator Cooling Fan Wiring Diagram Use wire connectors to secure the wires. connect the wires: connect the red wire of the cooling fan to the positive terminal of the power source and the black wire to the negative terminal. if the cooling fan has a yellow tachometer wire, connect it to the appropriate pin on the motherboard for monitoring fan speed. 30: constant 12v, unswitched 85: signal (switched 12v) 86: ground (completes circuit) 87: consumer (fan) 12v 87b: extra consumer (same as 87) 12v switched wire. may be green wire at a c clutch. note: or in an ’84 to ‘89 240 you may use the a c power ‘on’ wire: red white wire at ac switch microswitch in dash.
Radiator Fan Wiring Diagram
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