Expert Answers about Nissan Xterra

• Switch 12 Volt Power and Electric Brake Wire on Wire Harness for Nissan Xterra, Frontier, Pathfinder
• We have heard of the issue you are experiencing and it is related to the black 12 volt power wire and the blue electric brake wires on the vehicle. It is not very common, but it has come up before. The problem is that the factory tow package connector on a few of the Nissan Xterras, Frontiers and Pathfinders from 2005 to 2012 had the 12 volt power and the electric brake wire switched. This is the connector that the black connector from your Tow Ready Wiring Harness, # 118267, connects to....
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• No Trailer Running Lights On a 2007 Nissan Xterra
• The most common cause we see with the trailer running lights not working on a 2007 Nissan Xterra is the absence of a relay, the Blue 4 Terminal Relay which is included int he Curt Relay Kit # C57000 which installs into the fuse box under the driver dash to the left of the steering column (see photo).
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• Troubleshooting Brake Controller Installation on 2013 Nissan Xterra
• Thank you for all the details on your Xterra's wiring and brake controller behavior. The first and easiest troubleshooting step you can take at this point is to unplug the Primus IQ brake controller # TK90160 so it powers down and leave it disconnected for 15 minutes. Then reconnect it and without connecting the trailer see what the display indicates. If you again see the SH short circuit code then you'll want to check all of the Xterra wiring from the actual socket contacts to your...
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• Is There More than One Way Nissan Vehicles Install Trailer Wiring Using Factory Connections
• Nissan tow package wiring on vehicles like your 2014 Nissan Xterra installs in a few different ways, but since you were able to have the kit work at one point yours was installed properly. The harnesses and relays are just sometimes in a few locations like you mentioned. Sometimes behind the kick panel on passenger side, sometimes at the rear of the vehicle, and sometimes closer to the driver side of the vehicle. What issue are you having? Most likely issues with this setup are related...
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• Troubleshooting Trailer Running Light Circuit that Stopped Working on a 2007 Nissan Xterra
• Actually the brown relay controls the 12-volt power circuit (which you aren't using), and the blue relays control the turn signal circuits so most likely the problem is a blow fuse in the fuse box of your 2007 Nissan Xterra or one of the other towing relays you had installed in your vehicle. I would recommend you check the diagram for the fuse panels and relay boxes to see find the trailer running lights circuit and check to see if a fuse or relay is blown. The easiest way to check for...
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• Troubleshooting Right Trailer Light Not Functioning On 2010 Nissan Xterra
• The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56225 is a confirmed fit for 2005 to 2015 Nissan Xterra models without factory trailer connectors. Since you are having some issues with your trailer right turn signal, I recommend starting with your trailer ground. If the ground is corroded or rusted it often will cause one function to not work on a trailer when the other functions work. Make sure you have a solid metal to metal contact for that ground....
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• Troubleshooting Trailer Lights After Installing Wiring in 2006 Nissan Xterra
• Thank you for your recent purchase from etrailer and for detailing your troubleshooting efforts with your wiring harness kit # C56225. Since you have applied a circuit tester to the 4-pole harness and confirmed that it has the correct output, and that it works fine with a second trailer, odds are that your issue is within the wiring on the first trailer. It is possible for corrosion to build up inside the connectors or on their contact surfaces. Even slight greenish or whitish discoloration...
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• Troubleshooting Brake and Turn Lights on T-One Wiring Harness for 2010 Nissan Xterra
• The Tow Ready Replacement OEM Tow Package Wiring Harness # 118263 is a fit for the 2010 Nissan Xterra with factory tow package. It is possible that exposure to the elements has corroded the OEM connector under the vehicle where this harness plugs in. You can try disconnecting the harness and applying a spray-on contact cleaner like Caig De-Oxit to see if that corrects the problem. You can apply a tester like # PTW2993 to the pins on the OEM connector to see if the brake and turn signals...
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• Troubleshooting Tekonsha # 90885 P2-Brake Controller Install on 2014 Nissan Xterra
• First, unplug the # 3050-P connector from the rear of the controller, and use a circuit tester like part # PTW2993 to test the pin fed by the black wire. If you're getting power, make sure the pin is correctly aligned. If you're not getting power, unplug the harness from the connector under the dash, being sure to note which pin the black wire connects to. Use the circuit tester on the pin that the black wire connects with. If you get power on the connector, check the end of the 3050-P...
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• What is the Typical Wiring for a Tow Vehicle Side 7-Way
• If you check out the picture I attached of a typical 7-Way you can see that the 12V Power is typically on the 2 o'clock position pin and the Brake Controller Output is typically on the 4 (or 5) o'clock position pin. You can verify this with a Circuit Tester # PTW2992 while applying full power with the manual override lever on your brake controller. If your trailer 7-Way is not wired in this manner then I encourage you to swap the wiring on your trailer before the wiring on your 2007 Nissan...
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• Troubleshooting Running Lights Not Working On Trailer
• There are a couple of things to look at when running lights on your trailer aren't working. First, I recommend checking the fuses in your vehicle as there is often a fuse for this. Your owners manual can help. Next, I recommend cleaning your trailer connections on both the vehicle side and the trailer side. Sometimes dirt and corrosion can cause a breakdown in the connection between your vehicle and your trailer. If neither of those things solve your issue, then I recommend getting...
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• Troubleshooting Curt Venturer Brake Controller on 2008 Nissan Xterra with No Lights
• I spoke with my contact at Curt and he said it sounds like a problem with the wiring on the trailer, probably a bad ground. His advice was to make sure the trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free bare metal surfaces. If there is anything between a light ground and the metal trailer frame or if...
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• Tips for Swapping the 12 Volt and Brake Output Wires on Factory Wiring on a 2007 Nissan Xterra
• Yes, we are well aware that some Nissan vehicles have the 12 volt and brake output wires reversed in the factory wiring harness. And we have come up with an easy fix for the problem. there are actually a couple of options and I have included a link to a help article that explains both methods. For the first method you will need a pick tool or terminal release tool to basically swap the wire positions. Or, instead of locating a specialty tool that you won't use very much, you could use...
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• Trailer Running Lights Not Working After Installing Wiring Harness on a 2007 Nissan Xterra
• A lot depends on which wiring harness you installed and how your vehicle was equipped from the factory. For the 2007 Nissan Xterra, if it did not come with a 4-Way or 7-Way trailer connector from the factory then the vehicle will not have the relays needed to power the wiring harness. Or if it does have the relays, or you bought a harness that came with the relays, like # C56225, then it is possible that you will need an additional relay in the in-cab fuse panel to power the running lights....
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• Only Running Lights Working after Installing Curt T-Connector Wiring Harness on 2011 Nissan Xterra
• It sounds like everything was installed correctly with the wiring harness # C56225 on your 2011 Nissan Xterra. I recommend first checking to make sure there is no dirt or corrosion on or inside the factory gray connector under your vehicle. Look for anything that might be preventing a clean connection with the wiring harness plug and simply clean it out. A weak connection can certainly lead to the running lights working on your Nissan but nothing else. Also make sure that the harness...
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• Troubleshooting Nissan 7-Way Wiring Where Brakes are Locked Up When Trailer is Connected
• The issue is that the electric brake signal wire and the 12V battery charge wire are reversed in the main vehicle harness. This is the reason that the trailer wiring harness you have has a constant 12V signal on the brake controller output circuit. Since there is constant power to the brake controller output in, there should be no signal on the 12V battery charge pin. The easiest solution is to cut the wires leading to the output pin and the 12 volt pin on the 7-way and reconnect them backwards....
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• Turn Signals Do Not Work After Installing Trailer Wiring Harness on 2010 Nissan Xterra
• This is strange because you should only need the 3 relays that came with harness # C56225 for the 2010 Nissan Xterra. But it sounds like you do need additional relays (there also might be one needed in the fuse panel in the cab). We do have the relays, in the Curt Relay Kit # C57000. It contains 2 of the smaller blue relays and one larger brown one.
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• Troubleshooting the Hopkins Tail Light Converter Kit # HM48925 on 2004 Nissan Xterra
• The Hopkins Tail Light Converter Kit with 4-Pole Flat Trailer Connector # HM48925 is not compatible with LED lights. The correct wiring harness for use with LED lights is the Hopkins Tail Light Converter Kit with 4-Way Flat Connector - LED Compatible # HM48895.
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• No Power Adjustments on the Tekonsha Prodigy P2 Trailer Brake Controller 90885
• For starters, we need to rule out the Tekonsha Prodigy P2 Trailer Brake Controller part # 90885 as part of the problem. In order to do this you will need to sever the blue brake output wire just behind the brake controller and then test it with a multimeter with neither the brake pedal or manual override applied. If you show any voltage here then the brake controller is faulty and will need to be replaced. If the multimeter reads zero with the above steps then I would bet you have a short...
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• Troubleshooting No Trailer Brake Lights with 2004 Nissan Xterra Factory 4-Way
• If your 2004 Nissan Xterra is equipped with the factory 4-Way connector and only the brake lights aren't working (but the turn signals work fine) on your trailer I recommend checking to see if there is a fuse dedicated to the trailer stop lights and replace it if needed. The fuse box lid inside the main passenger fuse compartment should label the different fuse locations and their functions. If the fuse looks fine or there is not a fuse for this purpose then there is likely an issue with...
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