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Help! Need to find where to find parts for matco wfw12179' like a relay for the hi low switch and other parts

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2006 Chevy Impala. Headlights will not turn off... Period! I've replaced the light switch, turn signal/low/hi beam, and the BCM. No change. The only way to turn them off is pull the fuses. Help!!


Confirm that the light on alarm does not chime when the key is removed and the driver door is opened. If the alarm sounds than it is likely a body control module problem or circuit problem telling the lights to stay on.
If the alarm does not chime then I would check for a faulty relay. There are removable relays in the lighting circuits. Pull the relay and confirm that the lights remain off. The relay can have the internal contacts stuck together. Usually there are more than one relay of the same type in the under hood relay box. Replace the light circuit relay with an another identical part from another circuit and see if it corrects the problem. If so replace the relay. They are available from all auto parts store.

Nov 15, 2015 | Cars & Trucks

1 Answer

Why don't windshield wipers with rainsense work?


No wipers at all , hi , low , delayed ? You really need a factory scan tool to diagnose this problem , there is a lot involved ! The switch , BCM , wiper relay , an wiper hi relay ! With a scan tool you would be able to access data parameters in the BCM - body control module . When you turn the switch to turn on the wipers , that's an input to the BCM , the BCM then energizes the proper relay in the under hood relay box . Turning on the wipers ! Plus there could be trouble codes stored in the BCM pointing to a problem .
Low Speed Operation
When the wiper switch is in the low speed position, ground is applied through a resistor internal to the switch and the wiper switch low signal circuit to the body control module (BCM). In response to this signal, the BCM energizes the WPR relay by applying battery voltage through the wiper relay control circuit to the coil side of the relay. This allows battery positive voltage from the WPR fuse to flow through the switch input side of the WPR relay and out to the switch input side of the WPR HI relay. Since the wiper high relay is de-energized and its switch contacts are normally closed to the low speed control circuit of the windshield wiper motor, the motor will operate at low speed.
Wiper motor low speed operation and the WPR relay can also be commanded ON/OFF by using a scan tool. Refer to Scan Tool Output

Sep 08, 2015 | 2006 Cadillac DTS

2 Answers

No low beam headlights


Either the switch or bad wire connections at the bulbs. Scratch that - I'd be lookin at the switch.

Feb 16, 2015 | Cars & Trucks

2 Answers

2006 Chevy Trailblazer low beam headlamps will not work. Here's a list of what I have done. Changed both low beam headlamp bulbs Swapped cooling fan relay and HDM relay -headlamps worked but cooling fan...


Hi Ryan, check the fuse to the low beam, if your not getting power to the relay it will never work, the fact that you have 3 new relays they can't all be duff

Aug 30, 2014 | Cars & Trucks

2 Answers

99 tahoe drl work, hi beams work low beams on both do not, hear so many possibilities bulbs and sockets seam ok, could it really be a ground or relay help !!!!!!


yes, it's a complicated circuit, so there are lots of possible reasons. The most likely problem is the DRL relay or the hi-lo/dimmer switch. Since you say the DRLs work, I would check the hi-lo beam switch to see if it has continuity between the tan and yellow wires when set to low beams.


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Aug 03, 2011 | 1997 Chevrolet Tahoe

2 Answers

Need to purchase a battery charger, what type do you recommend?


It really depends on what you are going to use it for. I use a small charger when I just want to maintain a battery. I use mine also for keeping the battery up while I am performing computer diagnostics on a vehicle without the engine running.
The charger I use is a DSR Pro Series Model PSC 12500A It is fully automatic and has a 125 Amp boost. It is very compact and easy to use. It has LED's that tell you the condition of your battery, the charging rate, etc.
I purchased mine from Matco Tools (Matco part number MIC1200) It is available through many local parts suppliers as well as online automotive parts and equipment suppliers.

Jan 15, 2011 | 2003 Nissan 350Z

2 Answers

Head lights flicker at night low and high. speed up vechile and it goes away. slow down and it starts flickering intermitt again


your car uses separate relays for hi and low, so it isn't the relay. Looking at the diagram, I would guess it's the Headlight switch, but could also possibly be the Hi/Low switch. Does it help any to put a little pressure on the headlight switch? Or maybe try the same with the Hi/low switch?
Sorry, that's all the ideas I have for now. I will paste the diagrams below, but they may be hard to read due to resolution.

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Oct 27, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

My heat in my cutlass supreme turns off when i switch the switch to high but works on low


Three possibilities. AND all you can do yourself!
1. Hi/Low Blower Relay. However these usually fail on low and works on High.
2. Blower Control Switch.
3. Blower Motor Resistor.
If you do not have one: buy a Voltmeter, available for $6 at Walmart.
If you do not have one: buy a Haynes or Chilton Manual at most auto parts stores for $20-$25 dollars. I say this because you are obviously going to keep this vehicle. It will have most of the information with pictures to assist you.
Quickest way to determine which one?
Finding the Resistor....Go on line to autozone.com or advanceauto.com. Answer the questions on year, make, model and engine and go to "look up parts" or click on "Replacement Parts".
Pull up the Hi/Low Blower Relay.
Know you know what you are looking for.
This Relay is located near the Blower Motor.
The System goes: Switches, Relay and/or Resistor, Motor.
Unplug the electrical connection from the Switches going to the Relay.
Turn the engine on. Turn the Selector to Low and using a voltmeter, check for voltage coming from the Switch. Turn to High and rechaeck for voltage coming fom the Switch. No voltage on High? The Switch is bad.
Do the same with the Relay to Resistor connection and or Relay/Resistor to Motor connection. Check the Low and the High voltages.
Let me know if this helped or if you have additional information or questions. Feel free to contact me at FixYa.com!

Feb 11, 2010 | 1986 Oldsmobile Cutlass Supreme

1 Answer

Removal of harmonic balancer 92 grand prix


hi you need a special puller not sure were you live but some part suppliers rent special tool's or SNAP ON ,MAC and MATCO sell them
hope this helps

Nov 04, 2009 | 1992 Pontiac Grand Prix

2 Answers

2001 Honda low beams not working


This was a recall for 2001 civics. Take it to the dealer they will fix for free

Jun 30, 2009 | 2001 Honda Civic

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