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Expert Answers about Hopkins

  • Initial Setup Procedure for Quest Brake Controller
  • When setting the controller up for the first time, it is best to follow the guidelines as laid out in the instructions. As an initial adjustment, slide the manual brake switch on the controller fully to the left and set the power adjustment wheel so that the voltage reads 6.0 on the LED display. Then, drive tow vehicle and trailer around on a dry and level paved surface at around 25 mph and fully apply the manual brake switch on controller. If the trailer brakes lock up, gradually reduce...
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  • Installation of a 7-way Wiring Harness on a 2007 Toyota Tundra
  • If your vehicle was equipped with the tow package, the female plugs you are looking for will be located on your 2007 Toyota Tundra. I have linked a screen shot from our installation video as well as the video to this page to help you locate them. If your Tundra did not come with the tow package you will need to hardwire your truck to use a brake controller. The 4-way harness you will need is # 119147KIT and to adapt your 4-way to the 7-way I recommend the # ETBC7, because it will come...
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  • Does Hopkins Trailer Wiring Harness 33355 Fit a 2016 Toyota Tacoma
  • Yes, the Hopkins Trailer Wiring Harness part # 33355 is a confirmed fit for your 2016 Toyota Tacoma and comes with everything needed to install a 4-way at the rear of your truck.
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  • Why Are Brake Controller Designed to Stay On After Vehicle is Shut Off
  • Brake controllers are designed to stay on even with the vehicle turned off for safety reasons, but the "how" is because they wire directly to the vehicle battery. If the electronics of your truck were to malfunction or fail and you were on the highway with a trailer you would still want the brake controller to be able to activate the trailer brakes. What the controllers are designed to do is go into sleep mode after several minutes of no activity.
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  • Troubleshooting Brake Controller Not Activating With Brake Pedal on 2007 Chevy Silverado
  • When we see this problem on your generation 2007 Chevy Silverado the problem is a blown CHMSL fuse. This fuse controls the third brake light circuit. I bet if you were to go out and watch as someone applied the brakes of your truck the third brake light above the bed would not illuminate. The fuses in your truck are known for blowing quicker than most other vehicles. I wouldn't be surprised if your old brake controller may have malfunctioned and caused the fuse to blow.
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  • How to Wire Up a Trailer with a Breakaway Battery and Auxiliary Battery to Prevent Backfeeding
  • Typically people will let the breakaway battery run the breakaway system and then would use the accessory battery to power the interior lights etc. This tends to work the best since your breakaway battery needs to always be charged and interior lights could potentially drain the battery of the trailer. Since when you charge two batteries on the same circuit you have the potential to end up draining both the solution is to install a diode on the circuit to prevent this like the part #...
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  • Where Does the Brake Controller Output Wire Terminate on a 2008 Dodge Ram without OEM 7-Way
  • On a 2008 Dodge Ram that did not come with a 7-Way trailer connector the brake controller output wire does not run all the way to the back of the truck. It stops at the connector that is located under the driver's side wheel well. I have linked a help article that covers this and other steps. But if you have a factory 7-Way then you would not need to worry about that because the wire would be run all the way back.
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  • Part Needed to Convert a Trailer 4-Way to a 7-Way for Adapting to a Coleman Pop Up Camper
  • To convert the 4-way signal of your 2002 Land Rover Discovery to a 7-way signal the part # 37185 would do just that and would be all that you would need. Now if your trailer has brakes and you need a way to operate them as well you would instead want the part # ETBC7. This comes wit the same connector as the # 37185 but it also comes with everything you would need to install a brake controller in your vehicle and connect it to the 7-way at the rear of it. For a brake controller I...
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  • Weak Brake Troubleshooting and Replacement Brake Assemblies for 7k Trailer Axle
  • There are a couple things you should check before you would want to replace your brake assemblies. I would check the main ground for the trailer. This is the wire that runs from the trailer connector to the trailer frame and provides the ground for the entire trailer. The ground strap may have come loose and now may not be strong enough to fully apply the trailer brakes. Some brake assemblies are manually adjusted. They could very easily be in need of adjustment. You will want to...
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  • Trailer Wiring Recommendation for a 2011 Toyota Tacoma
  • The picture you submitted looks like a connector for an intermediate harness for a 7-way on your 2011 Toyota Tacoma. Most likely he went to take the 7-way off of his truck and instead of just removing the connector he went further up the wiring and removed an OEM Toyota harness. We can't get that harness, but if you go to a Toyota dealer they will be able to get you the harness. From there you could their 7-way or get ours part # 20119 that also has a 4-way built into the side of it....
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  • Recommended Replacement Wiring for 1996 Dutchman Duck with Obsolete Wiring Harness
  • Thank you for the picture. If the contacts on your trailer connector are like those on the Hopkins 6-Pole Square Connector Kit # 37995 then you can use 1/2 of this kit to replace your trailer's damaged connector and also Hidden Hitch adapter # 30104 to join it to your 4-pole-equipped vehicle. If this is not your connector then your best bet is to re-wire the trailer with a new 4-pole connector to match what is on your vehicle. You can use a junction box like # 38656 to join the existing...
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  • Wiring Harness for 2003 Toyota Tacoma to Allow Installation of Hopkins Backup Camera # HM50002
  • The Hopkins Smart Hitch Backup Camera and Hitch Aligner System # HM50002 is designed for use with a 7-way-equipped vehicle since that type of connector provides the reverse light signal to activate it when you're backing up. Since your Tacoma has only a 4-pole flat trailer connector (which does NOT include a reverse light signal) you'll need to add one. The Hopkins system uses a round U.S. Car connector format for installation. You will need to install Hopkins Universal Wiring Harness...
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  • What are the Wire Functions on the Factory Brake Controller Plug in a 2012 Ram 1500
  • So by looking at your picture and comparing it to harness # 3021-P for a 2012 Ram 1500 it looks like the pink /white wire is ground, green/black is 12 volt power in, yellow/red is output to the trailer brakes, and green is input from the brake switch. You can test this using a circuit tester such as # 3808. A wire that has 12 volt power all the time goes to the brake controller black wire. A wire that only has power when the brake pedal is pressed goes to the brake controller red wire. You...
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  • Adding a 4- and 7-Way Trailer Connector to a 2015 Toyota Tundra
  • The 4- and 7-Way trailer connector, # HM40975, is the right shape for the factory location on your 2015 Toyota Tundra but it is not a direct OEM replacement. It will plug into the round harness though and there isn't anything else we carry that would be a better fit.
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  • Will a 7- and 4-Way Trailer Connector Fit a 2015 Jeep Grand Cherokee
  • Yes, the 7- and 4-Way trailer connector # HM40975 should plug right up to the harness on your 2015 Jeep Grand Cherokee. If the Jeep did not come with a factory 7-Way then you might have to have the dealer program the computer to accept the 7-Way to get all the functions to work. So if you plug it in and not all the functions work, that would be why.
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  • Replacement 7-Way Recommendation for a 2004 Chevy Silverado 1500
  • Yes, the # HM40975 that you referenced will fit the connector in your picture. The picture is pretty blurry though. So if you are needing to replace that harness as well the part # HM40975-11998 comes with the connector with wires that could get hardwired to the connector in the picture if you were to cut it off.
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  • Parts Recommendation to Install a 4-way in a 2012 Toyota Tundra
  • Yes, the # HM11141835 that you referenced has been confirmed to fit your 2012 Toyota Tundra and would install in the connectors you have found behind the bumper. Or, if you have a factory 7-way and you want to keep it functional and have an additional 4-way for the light bar you could use the # 118384 instead. This will plug inline with your 7-way and will provide you with an additional 4-way for the light bar. I attached a page that has all of our under tailgate lights we offer that...
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  • 7-Way and 4-way Trailer Connector Recommendation for 2004 Toyota Tundra with Factory Tow Package
  • The colors of the wires of the # HM43385 may not perfectly match what you have on your 2004 Toyota Tundra, but as long as they functions match up (they should), this product would be exactly what you need. You can verify that the connectors you found match pins of the diagram with a circuit tester like part # 3808. You will need someone to apply the different taillight functions while you test the pins with the connector.
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  • Adapter for a 6-Way Round on a Harley Davidson Trike to a 4-Way Flat Trailer
  • It does not appear that any of the 6-Way to 4-Way adapters are going to work because of the unique pin out that is on the 6-Way on your 2013 Harley trike. You would essentially need to make an adapter to match the pin out. You will need a trailer side 6-Way, # PK11604, and a vehicle side 4-Way, # 18172, cut to the length you need. Then you just attach the wires in the right place to match the 6-Way you have. On the 4-Way end the white wire is ground, yellow is left turn and stop, green...
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  • Will the Hopkins Backup Sensor System # HM60100VA work on a 2007 Porsche Carrera
  • The rear fascia on the bumper of your 2007 Porsche Carrera would not be an issue for the sensors of the Hopkins Backup Sensor System # HM60100VA that you referenced. The sensors actually stick out 1-1/2 inches from the back of the mounting plate so that means they would only be recessed about 1-3/4 inches based on the dimensions you listed. The sensors have a narrow enough field that they would work fine.
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  • Will the Alert Still Sound if the Bulb Burns Out on Hopkins Backup Alert # HM20100VA
  • I spoke with my contact at Hopkins about the Backup Alert, # HM20100VA. He stated that if is the bulb that burns out then the alert will still sound. If it burns out before the unit in the receptacle where it plugs in (meaning no power reaches the unit) then neither the bulb nor the alert will function.
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  • Does the White Wire on the 4 to 7-Way Adapter # 37185 Have to Be Connected on a 2012 Mazda CX-9
  • You will need to ground the adapter # 37185 to the vehicle frame for it to work. The other functions if you do not need them can be taped up and stowed out of the way. The 4-Way that you installed may be ground but that ground does not continue on the 4-Way part of # 37185. That is why the white ground wire must be attached.
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  • Stick On RV Level Recommendation
  • The largest stick on level we offer for RVs is the Hopkins Never Fade Trailer Bubble Level Set # HM08526 which measures 3-3/4" long X 1-1/2" wide. The reflective bubble in the level make it easy to see from a longer distance like through a rear view mirror.
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  • Brake Controller Installation Parts Recommendation for a 2014 Nissan NV
  • If your 2014 Nissan NV has the tow package with a 7-way at the rear of the van yes, the Hopkins Plug-in Simple Brake Wiring Adapter # HM47635 that you referenced would allow you to install your Hopkins Agility Brake Controller part # HM47294. If you do not have the tow package you will need to start with a 4-way (if you don't have one). For that you would want the Curt Wiring Harness part # 56146KIT. Install video attached. Now to convert the 4-way to a 7-way and install the brake...
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  • Is Just The Mounting Bracket Available On Pollak 7 and 4-Pole Trailer Connector Socket, #HM40975
  • Yes, there is a separate part number for just the mounting bracket on the Pollak 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket, # HM40975. The mounting bracket part number is Hopkins Replacement Mounting Bracket, # HM40978.
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  • 7-Way Recommendation for a 2015 Chevy Colorado to fit OEM Blank in Bumper
  • The Pollak 7- and 4-Pole Trailer Connector Socket # HM40975 should fit in the socket at the rear of your 2015 Chevy Colorado. You would just need to remove it from the bracket it and it would fit right where the blank is on your truck.
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  • Amperage Draw of the Hopkins # HM30300VA TPMS signal repeater
  • The Hopkins Tire Pressure Monitor System Signal Repeater # HM30300VA that you referenced is designed to work with 12 volts of power so it wouldn't work being powered by a 5 volt power source. When this unit is on it will draw right at 150 milliamps.
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  • What is the Wire Gauge Used Inside of Hopkins Heavy-Duty, Coiled Trailer Connector Adapter
  • The actual wires inside of the cable for coiled extension # HM47083 are 16 gauge wires.
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  • How Long is the Hopkins Plug-in Simple Brake Wiring Adapter - Nissan # HM47635
  • The Hopkins brake controller adapter # HM47635 is 3 feet long. The only adapters available that plug into the brake controller also have the plug on the other end. If you needed one with blunt cut wires to attach to a vehicle you would need to clip the vehicle end off.
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  • Adding a 7-Way Trailer Connector to a 2007 Jeep Wrangler with Factory 4-Way Wiring
  • You could use an adapter like # V30606 and plug in the 4-Way on your vehicle to the back of it and ground the white wire to the frame. This will provide the basic lighting functions for the 7-Way, right/left turn and brake, running lights. If you need all of the other functions, 12 volt power, brake controller output, reverse lights, they will need to be hardwired. If the trailer has a 7-Way connector then it probably has electric brakes and you would want to go ahead and get the 7-Way...
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