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Q: How do you wire a four lead 12 volt blower motor switch?
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You have a 1991 ford e-150 and my blower stoped blowing you checked the fuses and the fuse is not blown is there any way to check the blower motor without taking the motor out IS THE SWITCH GONE BAD?

Run a lead from the positive on the battery to the fan. If it begins turning the problem is in the switch. I wired a switch on my dash for the fan.


What would cause a blower motor to turn off and then turn on either right away or maybe hours later?

1. A bad ground. 2. A bad power lead. 3. A bad blower motor. 4. A bad switch. 5. A bad resister..............


What causes the blower fuse to instantly blow in a 99 Chevy blazer?

Short in the circuit somewhere. Try unplugging the blower motor, closing the circuit with a test lead or test light, and seeing if it blows then. If not, the problem would seem to be in the blower motor itself.


Where is the blower fan resistor in a 1997 Chevy astro van?

It is located behind the coolant and windshield washer reservoirs. The two wires on the blower motor will lead you to it.


Where is the blower switch resistor?

The blower motor resister is usaully located close to the blower motor, either under the dash or under the hood on the firewall. It all depends on your year, make and model. i have a 2004 trailblazer


The fan on 2002 trailblazer don't work on the first three settings but four and five work how do you fix this and where is it located at?

This is the blower motor resistor failure that causes this problem. If you drop your glove box you will see the blower motor. Follow the wires that lead to a spot behind the blower and into the ducting. Two screw bolts are seen holding the resistor module in place. It is sometimes easier to remove the lower dash panel to get to the resitor module. Simply remove them and disconnect the wires at the motor and replace with the updated part. www.trailvoy.com


What would make a 1994 Honda Accord interior fan not work but still have the air compressor kick on?

They work independent of each other in this situation. Your blower motor may be worn,(brushes worn). I would take a test light to the hot lead at the fan motor to see if there is power to it ;if there is, that tells you the motor is shot.Get yourself a new blower motor if that is the case.


What would keep your 2000 E-350 from turning over when you just replaced the blower motor and it started fine before that now it just clicks and battery is charged and posts are clean?

The relay is right behind the battery. The lead got bumped off when removing the battery to get access to the blower motor.


How do you replace the front blower on a 1983 Chevy G20 van?

Looking at the procedure in my 1980 GM service manual and comparing it to my 1984 G20 van, it apears to be simple process. 1983 should be very close. Negative battery cable must be disconnected. Coolant recovery tank and power antenna need to be removed. Blower motor lead wire is disconnected. Blower motor mounting screws (number may vary) are removed. Blower motor and wheel (cage) are removed as an assembly by prying gently on the blower flange. The sealer may be damaged in the process. The wheel can be removed from the motor. Apply new bead of sealer to the entire circumference of the mounting flange of the new motor. Installation is reverse of removal.


How do you replace blower motor resistor on 2001 pathfinder?

I WOULD TROUBLE SHOOT FIRST:1Locate the fuse for the blower motor in the owners/service manual. Test the fuse, with the ignition key on, using the 12-volt test light. Attach the clip lead of the test light to a good ground like a bolt screwed into metal, and touch the sharp probe end to the terminals on the fuse. An indication of power at both terminals of the fuse determines that the fuse is good. If one of the terminals has power and the other does not, the fuse is bad. Replace the fuse as needed.2Unplug the blower motor and test for power using the 12-volt test light in the same manner as explained in Step 1. Testing at the motor itself eliminates the possibility of confusion caused by complicated electronic blower controls found in Electronic climate control systems. Test for power at all the blower speeds by moving the blower speed switch through all positions.A faulty resistor loses power at different positions on the switch. High blower speed has direct power to the motor from the switch. If there is no power indicated on high blower speed, the problem is most likely the switch or the fuse. If there is power indicated on high blower speed, but not low or mid range, the problem is the blower resistor.3Test for ground at the blower motor if there is power indicated at all ranges, but the motor does not function. Most blower motors ground through the case of the motor when it is screwed into place or by a small ground strap from the case to the body of thecar. Over time, the ground connection can become corroded or loose, causing the motor to function intermittentlyTHEN IF YOU NEED TO1Locate the blower motor and look around the outside and close to the motor for a 2-by-3-inch plate held on by two or four small screws. There will be an electrical connector plugged into it with five or six wires, depending on the vehicle type and heating and air conditioning type of control panel.2Test the resistor before replacing it. It is always recommended to test any electronic unit before replacing because there are a multitude of things that could cause the same symptoms. It only takes a few minutes and can qualify the assumption that a part is bad. It will save money to replace or repair the right part the first time.3Check the speeds by turning the fan conrol to all positions. Take note which fan speeds work and which speeds do not work. If the fan works only on one speed the blower motor resistor is very likely bad.4Check the fuses if the fan speeds do not work. The fuses for the interior heating and air conditioning fan are usually under the hood in the fuse and relay center. If the fuse looks good, then take it out and turn the ignition key on and use the volt meter set at 20 volts DC. Check to make sure that there is voltage to the fuse. If not, check for an open circuit to the fuse.5Check the relay to determine if there is power at the fuse. The relay should have two of the four terminals showing power. With the key on and the fan turned on, remove the relay and put it back in, listening for it to click. If it does not click, then replace the relay.6Check the voltage at the electrical connector on the blower motor resistor to see if the fuse and relay are good. Make sure that power is present at the connector with the key on and the fan switch on. There should be power at two terminals of the blower motor resistor. If only one terminal has power, replace the resistor. If two terminals have power, replace the blower motor itself. Remove the screws and unplug the connector to remove the blower motor resistor. Put the new one in its place by screwing it back in and plugging in the wiring connector


Why would the blower on a Renault laguna r reg ac not work but all lights up on dash and says its blowing help?

Check to see if you are getting power to the blower motor - if so motor is probably bad and needs to be replaced also check power leads in back of the fan control unit below stereo my control unit melted and burned where the main power lead goes in causing no contact when control switch 1/4 was turned on had too replace unit


How do you wire a 110-volt single-phase reversible boat lift motor?

You need a three way switch (dpdt). Center leads would be output. Leads on one side would be hot and neutral and on other end the opposite. Center position of switch would be off. When you throw the switch in one direction current will flow in one direction causing the motor to turn in a given direction. When the switch is thrown in the opposite direction the current flows in the opposite direction causing the motor to reverse: (switch-terminal view) |-----|-------|------| | #1 | #3 | #5 | | #2 | #4 | #6 | |-----|-------|------| Lead 3 goes to one side of motor (hot) and lead 4 goes to the other side (com). Lead 1 goes to AC hot Lead 2 goes to AC common Lead 5 goes to AC common Lead 6 goes to AC hot Switch would toggle from center position to left or right with center position being off.