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Expert Answers about Mazda


  • Preventing Rattle with Swagman Titan and Draw-tite Sportframe Trailer Hitch Receiver Class I
  • It is normal to have a little play between the hitch and your bike rack, and that play is what causes the rattling you are experiencing. If you wanted to reduce that play you could use a the no-Rattle Trailer Hitch Wedge # MPG908. This rack also has a locking anti-rattle device, the Swagman # S64029. I attached a review video for these products for you to check out also.
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  • Troubleshooting a 1999 Ford F250 that Lost Interior Lights, Dash Lights and Running Lights
  • Brake controllers draw a considerable amount of amperage. What I can almost guarantee happened is when you hit the override lever of the controller you overdrew the running light/head light circuit you used to power the brake controller. Once you determine what has shorted out on the truck I would strongly recommend you change the wiring of the brake controller so that it is powered straight off of the positive terminal of the battery through a circuit breaker like part # 9506P. Pull the...
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  • No Trailer Lights After Installing a Trailer Wiring Harness on a 2008 Mazda CX-9
  • If you have the trailer wiring harness # 118520 installed according to the instructions and it is not showing power coming out of the converter box then that indicates that the converter is bad and needs to be replaced. Since this converter gets power for the trailer lights from a direct connection to the battery, if that connection is not made then the converter will not work. I have included some links that might help you.
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  • Curt TriFlex Brake Controller AE Error that Caused Error Messages on a 2016 Mazda CX-5
  • The first thing you will want to do is have the error codes showing up on the vehicle cleared by a mechanic. When a vehicle throws codes like that they stay in the computer memory so disconnecting the controller won't stop the error messages from appearing. It does sound like something may not have been hooked up quite right but it could also be an internal issue with the controller (more on that below). On the 2016 Mazda CX-5 there isn't a plug-in harness for a brake controller so it...
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  • Troubleshooting Running Light Circuit on Wiring for 2011 Mazda CX 9 Trailer Harness
  • The most common cause for some trailer light functions to operate while others do not is a bad ground connection at either the vehicle wiring harness or the trailer-side wiring. This can happen because a weak ground will still allow some current to pass through - say enough for brake lights and turn signals that are not on all the time - but not for other functions like the running lights and license plate light that ARE on continuously. Check that the white ground wire's ring terminal...
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  • Troubleshooting Curt Trailer Wiring Harness # C56175 in 2005 Mazda Miata
  • The most common fix for a wiring harness that works fine on some functions but not others is to re-position the ground wire. A weak ground can cause lots of odd behavior, including some functions working while others do not. Make sure the ground wire ring terminal is FIRMLY affixed to a clean bare metal surface on the car. You may need to sand off some paint or primer, clean off any grease or other foreign material, or you can relocate the ground terminal to a new position. Be careful...
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  • Can a Taillight Converter Module Go Bad After Working Properly for Months
  • It is possible for a taillight converter module to go bad. If your circuit testing shows correct signal inputs to each input pin of the module, but no output from the module, then the module could be blown. Please refer to the trailer wiring troubleshooting guide attached. This page offers information about the likely causes for a failed module and how to isolate the problem. Any one of a number of issues can cause failure of a module. If the module suddenly stopped working and there...
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  • Troubleshooting 2016 Little Tough Guy Tag Max A-Frame Jack Scraping Driveway with a 2014 Mazda CX-5
  • Bummer to hear about you bending your jack, I have a solution for you, but I can't recommend you cut off any of your current jacks tubing. I would instead suggest you get a swivel jack like the ProSeries # PSEJ10000101 and remove your current A-frame jack. This ProSeries jack will bolt onto your trailers frame and allow you to swivel it out of the way for better ground clearance when not in use. I have linked a video installation video of the jack as well as the page with all of our...
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  • Brake Lights on Trailer and 2013 Mazda CX-5 Do Not Work with Trailer Wiring Harness C56011 Installed
  • No brake lights on your 2013 Mazda CX-5 or the trailer? We can't have that! The first thing to do is to test the trailer wiring harness # C56011 using a circuit tester such as # PTW2993 or a meter if you have one. Basically, you will be testing the wires going into the converter box from the vehicle first. Have another person sit in the vehicle and operate the brake lights/pedal while you test the input wiring for the harness. If you do not get a brake signal when doing this test then...
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  • Solution for Land Rover LR4 that wont Recognize Trailer with LED Taillights
  • We have a similar product as the one you referenced, part # C35FR. This product works on most German vehicles that have a hard time detecting trailers with LED taillights. I would normally recommend this for a situation like yours. But we have had feedback with other Land Rover owners who have reported that this product did not work with their trailer with LED taillights. The best recommendation I could make for you would be to replace the LED taillights of your trailer with incandescent...
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  • Best Practice to Deal with Chipped Paint on Trailer Hitch
  • If you notice chipped areas on your Draw-Tite Trailer Hitch # 76020, for your 2018 Mazda CX-9, the best thing to do is lightly sand that area to get it evened out and then paint over it to prevent the rust from spreading. Since hitches are underneath the vehicle where road debris is flying around it's a good practice to routinely check the hitch for any places where it has been hit and needs a touch up. We actually have a whole rust prevention help article which I'm linking to this answer...
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  • Troubleshooting Trailer Wiring for Fleetwood Pop-Up Trailer and 2003 Mazda B3000 Pickup
  • A potential cause for your issue is a weak ground connection. Trace the white ground wire from your 4-pole back to where it attaches to the vehicle frame. This ground must be secured to a clean and rust-free spot on the frame. If necessary sand off the rust/dirt from that grounding point and reattach the white ground wire or relocate it a new spot. If this does not correct the problem then I suggest you next test your existing 4-pole trailer connector on your Mazda to confirm it is functioning....
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  • How to Get that Last Bolt to Line Up When Installing a Trailer Hitch
  • It's best to only loosely install the mounting hardware at first, and once you get all of the hardware started go through and torque everything to spec. So I would recommend you loosen the bolts you've already tightened to give you a bit of room to move the hitch around and get that last bolt started. I also attached an install video for this hitch plus an FAQ on hitch install tips for you to check out.
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  • Troubleshooting Right Blinker Taillight of # TLL9RK Not Functioning on Trailer
  • When a single trailer taillight doesn't want to function the issue is almost always related to the ground of the assembly. What you'd want to do is check the condition of the ground and fix as needed. If you have the # TLL9RK kit that you referenced it grounds through the white wire of the assemblies that normally get ran to the trailer frame. What you can do is run that white wire either all the way back to the main ground of the trailer wiring harness or find a better place to install...
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  • Troubleshooting a Mazda CX-9 That Has Issues with the Smart Brake System After a 4 and 7-way Install
  • I am not incredibly familiar with the Smart Brake System in your 2019 Mazda CX-9, but I do not see anything mentioning a diode when installing the T-One Vehicle Wiring Harness # 118278 and the Universal Installation Kit for Trailer Brake Controller # ETBC7. A diode is designed to stop the reverse flow of current in an electrical circuit, so this could potentially be what is causing the issue with your Smart Brake System. Depending on how the system operates, it may need to be able to sense...
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  • Troubleshooting Trailer Lights Not Working Towing With Mazda CX-5
  • There can be issues like this on some trailers using LED lights where they don't work at all. More than likely your LED lights aren't drawing enough power and this is the reason the tester works but not the lights on the actual trailer. This also varies between vehicles which would explain why it works on the truck and not your CX-5. In order to simulate more current draw, you can use load resistors like the # DI34ZR. You will need one per circuit so in this case 3 for the right turn/stop,...
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  • The Lights On My 2018 Mazda CX-5 GT Alternate With The Trailer Tail Lights When Pressing The Brake
  • What you are experiencing is normal for your Curt T-Connector # C56377 on your 2018 Mazda CX-5 GT. The powered converter is taking the input from your vehicle lighting and distributing it out to the trailer tail lights. It may seem odd but there is no reason to be concerned as the lights are all working properly.
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  • Troubleshooting Blazer Trailer Tail Light C7493RTM That Stopped Working
  • First check to make sure the light is grounded properly. That is typically what causes a trailer light to stop working. Especially when the light is an LED that doesn't normally burn out. The light # C7493RTM that you referenced has a sealed lens that does not allow you to get into it. Plus the LED light inside it is not like a standard bulb that is easily replaced. Try improving the ground first. That will most likely fix the problem. I attached a couple help articles on troubleshooting...
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  • Troubleshooting Turn Signals Not Working When Running Lights On Following Installation of Curt 56377
  • The turn signals should definitely work while your running lights are on. Based on what you are describing you need to check the ground wire connection on your # C56377. Make sure it is secure on a clean, bare-metal surface. The other possibility is the connections from the T-connector aren't secure. You can unplug them and plug them back in to make sure they are seated properly.
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  • Troubleshooting Brake Controller That Triggers Warning Lights on Mazda CX-5
  • If installing the Tekonsha Prodigy P2 Brake Controller # 90885 triggered error messages on the dash of your 2018 Mazda CX-5 then most likely the red wire from the controller was connected to the wrong wire on the vehicle. The red wire (brake input) should be connected to the cold side of the brake switch behind the brake pedal. This will be the wire that ONLY receives power when the brake pedal is depressed and no power with any other function. It is very important to use a circuit tester...
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