Thanks for reaching out, Lisa!
Trailer wiring can be a bit confusing at times but the best piece of advice I can give is for you to ditch the colors of the wiring and focus more on what circuits they are connected to.
For example, the Hopkins 7-Way RV Style Connector with Molded Cable # H20046 uses the following functions for the following wires on the harness:
White Wire - Ground
Red Wire - Left Turn and Brake
Brown Wire - Right Turn and Brake
Green Wire - Tail Lights
Blue Wire - Brake... view full answer...
Hi Bill,
RV manufacturers rarely tend to match a specific color code and will typically use whatever is on hand and could even splice together different colors inside the walls so it's really just going to come down to testing the wire's function to determine if it's the correct wire for ground. If you were removing an old thermostat and the green wire was clearly labeled as ground then it would likely be safe to assume that it could be used as the ground wire when installing the Replacement... view full answer...
Hey Tashi,
Your Fogatti wtare heater # LSB64FR is going to have a red wire to run to a 12v power source, black wire for your negative that you can just run to the frame with a ring terminal, and two blue wires that need to connect to the two blue wires on the remote. It doesn't matter which blue wire goes to which blue wire on the remote but they can never touch.
As for the old wiring you'll need to test each wire with a multimeter # PT89ZR and see which is the power. The rest of the... view full answer...
Hey Eric, with that much voltage drop the issue is that the wire length added way too much resistance. The only solution is heavier gauge wire everywhere most likely. I would think that 8 gauge wire would be pretty close if wired everywhere but you might be looking at needing 6 gauge since there's just so much wire. You also need to make sure the ground wires are of an equal gauge too. view full answer...
For brake controllers like your Hayes Energize III item # HA81742B the white wire gets grounded, the black wire runs to a constant 12 volt power source, the red to a wire that only has voltage when brakes are applied typically the brake pedal switch, and the blue to the output circuit of the 7-way connector.
Since your Suburban has a different set of colored wires from a previous controller you will need to use a circuit tester like item # PTW2992 to check the functions of the wires you... view full answer...
The black wire is usually the 12v power wire that typically goes in the 11 o'clock position on the trailer side 7-way connector as you are looking directly at the front of it. It'll keep your battery charged, run an electric jack, or something along those lines. Not the end of the world if you don't have anything to run it to. Now the red wire is going to do something with your left side trailer lights if you are wiring your 7-way in a standard configuration so it's pretty important.
I... view full answer...
Hey Randy,
When it comes to trailer wiring there unfortunately isn't a standard color coding that manufacturers have to follow so you'll have to do a bit of investigating to determine the function of the wires on the trailer lights, unless you still have the wire diagram for the lights. White wires will more often than not be your ground, Brown wires are typically running lights, yellow and green are usually your stop/turn light function. If you have a 12v battery laying around you can... view full answer...
The best thing you can do is trace the wires or test them for their functions. Trailer manufacturers are not required to only use specific colors for their wiring so they can literally do whatever they want. Once you have traced you can label your wiring so that you can wire it to a particular connector. Also depending on the quality of the wiring on the trailer you might consider replacing it all completely. A harness like the 4-Way # A25W2GWB has full length ground wires but the wires... view full answer...
You really can't trust wire colors on a camper since they don't always match the expected function. In most cases blue is brake output so not seeing one would make sense. As far as the other functions go, the best thing you can do is try and trace the wire back to see what it runs to.
If need be you can rewire the 7-way or add a new connector # PK12706 to match the functions on the 7-way on your truck. Some Lance campers use a proprietary connector so it could also be that they swapped... view full answer...
Since these "trim" lights turn on with your brakes I'm assuming they also flash with the turn signal. Whatever wire is running to these lights is probably spliced into the left and right turn/stop circuit. All you need to do is disconnect that wire from the signal/brake wire.
I'm assuming you want them to work with the running lights so splicing them into what is typically the brown wire would do the trick. Colors aren't always true to function so it would be a good idea to test the wire... view full answer...
Hey Bob, when just the power and ground is connected on a brake actuator like the Dexter DX part # K71-651 you won't hear the unit prime itself. It would do this once a connection to trailer brakes is made which would be the blue wire that runs to the trailer brakes.
If it's running continuously I would check to make sure the breakaway switch isn't pulled or wired up wrong. view full answer...
Hi Ryan,
The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56285 is designed to stay in the trunk of your XC90 when not in use. When in use you'll just pull it out and close the rear hatch. There's a gasket that lines the rear hatch that will flex to allow for the wiring to pass through and not get smashed when you close the hatch. If you want to run it down to the hitch instead then you'll likely need to run the connector to a tail light corner and then... view full answer...
It sounds like something isn't wired correctly or the 4-way connector is bad but you've ruled out the trailer as the source of the problem. You will want to check to make sure that the brown wire is properly connected to the running light wire at the rear of your Metris and that the white ground wire is attached to a bare metal surface that is free of dirt and corrosion. view full answer...
That is definitely a strange problem you are having Brad. Especially with the right turn signal working but the brake light is not since they both are powered off the same wire. I would start by checking your ground connections both at the lights and the ground from the trailer to the vehicle. You can try using a loose piece of jumper wire from the trailer lights to the vehicle to see if that helps to resolve the issues you are having. If that fixes it you know there is an issue with the... view full answer...
Most Trailer License Plate Lights with a Bracket like the Optronics # LPL55CB you found are only going to have 2 wires a power and ground for the light. It looks like yours has either an additional light for either a reverse light or brake light. While I cannot tell who manufactured your light you are most likely going to have to test the light with a 12 volt battery to determine which wires are power and for which function and which is the ground. Typically white or black are the most... view full answer...
Sorry to hear about that Michael. There are a couple of basic troubleshooting steps you can do but really the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package # C56357 is plug and play.
The first thing I'd check is the ground wire and make sure it's connected to a solid bare metal surface that does not have any dirt or rust. Also make sure the wire isn't damaged or loose.
If that's all good check and make sure that the connector is getting the proper 12V needed to operate.... view full answer...
Hey Mark,
What gauge wire did you use to run from the junction box to the brake assemblies? If you didn't use at least 10AWG wire # 10-1-1 that could explain the heat build up and voltage drop. I don't recommend leaving the manual override clamped for long periods of time. I recommend reconnecting your brake assemblies, activating the manual override, and then then testing both wires coming from the brake magnets to see if there's voltage on both wires. Only one should have voltage and... view full answer...
Johnathan, since there there is a signal with the lights off, then there is a problem on the vehicle side. What you're going to need to do is check to make sure that the brown wire is properly connected to the running light wire at the rear of the vehicle, and that your grounds are all good, but it sounds like you've already checked this part so I'd move onto checking the converter.
To test your converter, you will need to test the wiring going in for function. If the functions are incorrect... view full answer...
Hey Lawrence,
The black wire on the Optronics LED Trailer License Plate Light # LPL81C1B is going to be your 12v power and the white wire will be the ground. You can either cut the plug off and hardwire the light or use a connector like the # GP-1 or # 142-49 to connect your light to power/ground. view full answer...
Hey Izzy, thanks for reaching out!
The red wire is used for 12V power for the Wireless Charging Dock # FBS012NCU, so the black wire will be for your ground.
In standard 12V applications black is used for 12V power which makes this feel a little weird, but for speakers red is typically 12V power and black is ground. view full answer...
Go To Results