The relays will activate the electric fans if the thermostat reaches 185f or if the ac compressor clutch is engaged. Cooling fan relay wiring diagram how to wire a fan relay hvac in dual fan relay wiring diagram image size 730 x 656 px and to view image details please click the image.
2 Speed Engine Cooling Fan Wiring
Dual fan relay wiring diagram. Here is a picture gallery about dual fan relay wiring diagram complete with the description of the image please find the image you need. Blue wire black wire to chassis ground diagram 1 kit contents qty. However two relays will divide the load and if a relay fails you will still have one fan running. The cooling fan wiring diagram below is what weve found to be the simplest and most reliable method. The dual 12 inch fan assembly is a great choice for most cars and trucks spal relays and wiring harnesses are designed for maximum performance. Description 2 relay wire harness 2 4060 amp relay tools needed wire stripper crimping tool important each relay will control up to two different fans with a combined maximum draw of 25 continuous amps.
Wiring dual cooling fans. We include instructions for a single fan and a dual fan using one or two relays in every relay kit we sell. Dual activation dual fan relay kit with 185 o on 175 off thermostat installation instructions this electric fan relay kit will operate a dual fan setup not to exceed 30 amps each. Start with taking both of the positive wires from the fans and run it to the yellow wires on each relay. Start your wiring project by taking both of the positive wires from the fans and run them to the yellow wires on each relay tab 87. The color coded diagram below will correspond with the wires on the relay kit to help simplify the wiring process.
Electric fan relay wiring diagram wiring diagram is a simplified tolerable pictorial representation of an electrical circuitit shows the components of the circuit as simplified shapes and the capability and signal contacts between the devices. It uses a 40 amp electric relay and electric fan sensor. C3 techperformance dewitts spal dual fan wiring instructions hey before i call dewitts tomorrow does anyone have the wiring diagram or. Page 5 12v switched wire to green wire at. The relay consumes the current switched on by a triggered connection either by a switch or in this case a temperature sender. You will then need switched power usually from your ignition switch wired to the blue wires on the relays.
With dual cooling fans there are two methods for wiring up the relay kit. Relay 2 electric fan 1 electric fan 2 87 87a 30 86 85 orange. This is based on the draw from the fans if the fans are larger and draw more than 15 amps each its recommended to install a second relay kit as shown below. You could use one relay. This is also why two wires are typically a larger gauge size than the other two. Primary cooling fan dual fans with dual relays single speed onoff using 12 volt switched devices only for primary activation using dual relays for two fans is not required.
Gallery of Dual Fan Relay Wiring Diagram
