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Hopkins Trailer Wiring Installation Kit

Hopkins Trailer Wiring Installation Kit

Item # HM51010
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Hopkins Wiring - HM51010
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Wiring your trailer has never been easier. This kit contains a multipurpose wire tool; 12-V LED circuit tester; connectors; zip-ties; ground screws; and more. Perfect for Y-harness and 4-conductor wire installation. Lowest Prices for the best wiring from Hopkins. Hopkins Trailer Wiring Installation Kit part number HM51010 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Q & A (23)
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Hopkins Wiring - HM51010

  • Tools for Wiring
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  • Installation Kit

Wiring your trailer has never been easier. This kit contains a multipurpose wire tool; 12-V LED circuit tester; connectors; zip-ties; ground screws; and more. Perfect for Y-harness and 4-conductor wire installation.


  • Great for wishbone-style Y-harness and bonded 4-wire installation, or any other wiring project
  • Includes the essentials for rewiring or hardwiring a trailer connector to your trailer
    • (1) Multipurpose wire tool for cutting, stripping and crimping
    • (1) 12-V LED probe circuit tester
    • (1) Roll of electrical tape
    • (9) Butt connectors
    • (1) Terminal grease packet
    • (2) Self-tapping, hex-head ground screws
    • (20) 5-1/2" Long zip-ties
    • (1) 4-Wire flat dust cover
    • (4) Splice connectors
    • (3) Ring terminals
    • (1) Resealable storage case to keep everything organized

51010 Hopkins Trailer Wiring Installation Kit

California residents: click here

Video of Hopkins Trailer Wiring Installation Kit

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Hopkins Wiring - Tools for Wiring - HM51010 Review

Today we are going to be taking a look at part number HM50110 this is the Hopkins 43-piece trailer wiring installation kit. It's going to great for wishbone style wiring harness and bonded four wire installations. It's also going to be extremely helpful with any other wiring project that you may have. The unit is going to include the essentials for rewiring or hard-wiring a trailer connector to your vehicle. We are just going to go over the components that is comes with. The first thing that I want to mention is the multiple purpose wire tool, this is going to assist you cutting your wires, stripping the wires and crimping your connectors. It's got everything nice and labeled on here, it's got the different gauges, it shows you what area of the cutter or what area of the tool you need to use it order to cut, to strip, to crimp or anything like that.

Really nice design and that's really going to come in handy again with any wiring project that you may run into.It's also going to come with one 12-vault LED probe circuit tester, it's going to be this right here. Your going to get one roll of electrical tape. You going to get nine butt connectors, these are simple connectors that get crimped and it's going to connect two wires together, three different sizes in there so it really does accommodate different wire gauges. Your going to get one terminal grease packet, two self tapping hex-head ground screws. These right here are going to be your five and a half inch long zip ties, your going to get twenty of these, that way you can secure any excess or slack in your wiring that you may have. It's going to come with one four wire flat dust cover and something that screws over the connections points when the connectors not in use.

It's going to prevent corrosion, it's really going to reduce the amount of dirt and moisture that may get into the connection points, so that's a nice little feature to have as well. Your going to get four splice connectors, again these are another tool to connect two wires together. Three ring terminals, two different sizes, your going to get one with the yellow end, that's a little bit bigger and then your going to get one with the blue end a little bit smaller. Two of them are the smaller ones, one of them is going to be the larger one and then you are going to get this nice carrying case. This is reusable, so once you get done with all the components or maybe you don't use all the components included, you can keep them stored in here for neat organization or you can just reuse this and maybe store some other items in there that you may have laying around. That's going to do it for today's review of part number HM50101 this is Hopkins 43-piece trailer wiring installation kit.


Customer Reviews

Hopkins Trailer Wiring Installation Kit - HM51010

Average Customer Rating:  4.6 out of 5 stars   (5 Customer Reviews)

Wiring your trailer has never been easier. This kit contains a multipurpose wire tool; 12-V LED circuit tester; connectors; zip-ties; ground screws; and more. Perfect for Y-harness and 4-conductor wire installation.

- HM51010

Just what i need to rewire the whole utility trailer. Great Suggestion from Tammie. Great Customer Service and Fast Shipping 509592

- HM51010

Got your basics covered! 480444

- HM51010

Great kit, with a little bit of everything you would need to wire a trailer. 351895

- HM51010

I thing it is a good product just for one use. 246021

- HM51010

What can you really say about a tool kit? Good quality, great price. Worked for exactly what I needed it to. 215982


Ask the Experts about this Hopkins Wiring

  • Ways to Convert Trailer to LED Type Lighting
    You can convert your RV to separate turn signals and/or LED operation in a couple of ways, depending on how much wiring modification you care to do. Any of your existing lights can be converted to LED operation by swapping out the incandescent bulbs for LED-type replacement elements. We have LED equivalents that are drop-in replacements for many popular standard bulbs. All appear on the linked page and can be selected by bulb number, such as the popular 194 type bulb # A194B that can...
    view full answer...
  • Does the Prodigy RF Brake Controller Need Brake Output and Reverse Lights Circuits to Work
    Since you are using the Prodigy RF brake controller # 90250 you will only need to have the 4-Way plugged into the adapter, the white wire grounds to the vehicle frame, and the black wire needs to have power because that is where the RF gets its power. The blue and yellow wires on the adapter, # C57674, will not be used for the RF. But if your trailer has an electric reverse lock out then you would have to attach the yellow wire to a reverse light wire on the vehicle The black wire...
    view full answer...
  • Wiring Harness Needed to Install Brake Controller on 2018 Chevrolet Equinox with Factory 7-Way
    Since your 2018 Chevy Equinox has the factory 7-way connector, all you will need is the brake controller and the hardware to tie it into the trailer wiring. Traditionally, GM has not put a brake controller port on the Equinox, so plug-in brake controller adapters aren't currently available, even for the 2018 models. So, instead of a quick connect under the dashboard, you will have to hardwire your brake controller. To complete the installation, you will need the Draw-Tite Wiring Kit, #...
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  • Adding a Brake Controller to a 2017 Ford Explorer XLT with Factory Tow Package
    If your trailer has electric brakes then I highly recommend using a brake controller to decrease stopping distances when towing and to reduce wear and tear on the 2017 Ford Explorer's brakes. Your Explorer with tow package should include a 7-Way trailer connector which is needed for electric brakes. But also check the glove box for a Ford brake controller harness which they may or may not have included. If you do have the factory brake controller harness then the amount of installation...
    view full answer...
  • Adding a 7-Way Trailer Connector to a 2014 Ford Escape with Factory 4-Way to Use RF Brake Controller
    In order to use the Prodigy RF # 90250 you will need to install a 7-Way trailer connector on your 2014 Ford Escape. For that you will need # 37185, a 40 amp circuit breaker, # PK54540, and enough 12 gauge wire, # 12-1-1, to reach from the back of the Escape to the front. The wire is sold in increments of 1 foot. Twenty feet is recommended so you would enter 20 in the quantity box. The factory 4-Way will plug into the back of # 37185. Then you will ground the white wire to the vehicle...
    view full answer...
  • Tips for Installing Opti-Brite LED Work Lights on Outside of Enclosed Trailer
    As far as physically mounting the Opti-Brite work light # TLL60FB it has a bracket that you can just bolt directly to the mounting surface so that much is easy. Just be sure to use hardware that is appropriate for the mounting surface material. Wiring on the other hand is just slightly more complicated. What I recommend is running the power wires for the lights to a switch, # PK34513. Then the power wire for the which will need to attach to either a trailer mounted 12 volt battery or...
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  • Adding a 4- and 7-Way Connector to Use Prodigy RF Brake Controller with 2005 Pontiac Vibe
    To add a 4- and 7-Way connector to your 2005 Pontiac Vibe that already has a 4-Way AND to have it work with the Prodigy RF # 90250 you will need a couple of parts. First you will need # 37185. The 4-Way you have plugs into this, retains the 4-Way and also adds a 7-Way. This adapter has several wires that you will need to hardwire to the vehicle so that it will work with the RF. First, ground the white wire to the frame. Since you are using the Prodigy RF you will not need the blue wire...
    view full answer...
  • Mounting Bracket for EZ Connector 7-Way 319-S7-05 and 14-Pin 319-S14-05-6
    EZ Connector Mounting Bracket # 319-S7-61 is compatible with their 7-way vehicle socket # 319-S7-05 as well as their 14-pin socket # 319-S14-05-6. Both share the same mounting hole spacing that is shown in the linked photo. For a crimping tool I suggest one the like tool included in wiring kits # HM51020 and # HM51010.
    view full answer...
  • Adding a 7-Way Trailer Connector on a 2012 Ford Escape to Use Prodigy RF Brake Controller
    To install a 7-Way trailer connector on your 2012 Ford Escape you will first need to install a 4-Way using # 118551 (since there isn't a plug and play 7-Way options for your 2012 Ford Escape). Then you can install # 37185. Since you will be using the Prodigy RF, # 90250, only the lighting functions and the 12 volt circuit will need to work on the 7-Way. To get the lighting functions to work you just plug the previously installed 4-Way to 37185. Ground the white wire from 37185 to the...
    view full answer...
  • Adding 7-Way Trailer Connector to 2013 Hyundai Santa Fe Sport with 4-Way to Use Prodigy RF
    To install a 7-Way on your 2013 Hyundai Santa Fe Sport with the 4-Way trailer connector and to use the Prodigy RF mounted on the trailer, you will need # 37185. You will also need enough 12 gauge wire, # 12-1-1, to reach from the back of the vehicle to the front. The wire is sold in increments of one foot. So for 20 feet you would enter 20 in the quantity box. And last you would need a 40 amp circuit breaker # PK54540. You would plug the 4-Way into the # 37185. Then ground the white...
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  • Wiring Instructions for Curt Harness # C55362 w/ Pollak 7-Pole Connector, part # HM40975-11998
    The Curt T-Connector # C55362 connects to the tow wiring harness underneath your 2002 Nissan Frontier. The harness is located to the rear of the spare tire. Please refer to the photos in the instructions attached. The tow wiring connectors under your Frontier are to be separated, and the T-harness inserted between them. You will next need to secure the white ground wire to a bare metal surface with the supplied screw (or there may be an existing screw you can use for this grounding point)....
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  • What Bulb Does Peterson Interior and Compartment Light 433600 Use
    I checked with my contact at Peterson, and the # 433600 interior and compartment light uses a standard number 1141 bulb. We offer a convenient wiring kit, part # HM51010, which includes all the essentials for a wiring project, and I am including some links to additional information on wiring, if needed for reference.
    view full answer...
  • How Much Should It Cost To Completely Rewire a Trailer
    I can give you a list of parts below that will be needed to rewire a trailer which you can then use when combined with the labor rate of the shop to give you an estimate but it can be very hard to estimate the price of said job because the labor rates for shops can vary quite drastically. If you think one shop is charging too much, I would shop around and compare prices but I can't really give you a yes or no answer in regards to whether or not they are charging too much. Tekonsha Push-To-Test...
    view full answer...
  • How To Connect Vehicle 4-Flat Connector To Loose Trailer Wires
    It sounds like your truck has a 4-way flat trailer connector with yellow, green, brown and white wires (see picture), which is pretty standard. It also sounds like your trailer has 5 loose wires that you are trying to connect to a trailer side 4-way flat connector similar to part # W787264. If this is the case, then it sounds like your trailer came with a wishbone style wiring harness meaning you have two running light wires (brown wires) for each side of the trailer, the left turn...
    view full answer...
  • Need Universal Installation Kit for Trailer Brake Controller # ETBC7 Minus the 7-Way
    To duplicate the Universal Installation Kit for Trailer Brake Controller, # ETBC7, minus the 7-way, you will need the Wiring Kit for 2, 4, 6 and 8 Brake Electric Brake Controllers, # 5506, Hopkins Trailer Wiring Installation Kit, # HM51010, 40 amp. In-Line Circuit Breaker, # 9510, and Wire Loom (sold by the foot), # 459075-1.
    view full answer...
  • Does Trailer Wiring Harness 119147KIT Include Everything for Installation on a 2010 BMW 135i
    Trailer wiring harness # 119147KIT comes with everything you will need for installation on your 2010 BMW 135i except for any tools you might need in the process. Extra wire and a circuit tester are included. A trailer wiring installation kit such as # HM51010 will help with crimping wires. But if you have one the only other things you might need are electrical tape and wire ties (to hold the power wire to the bottom of the vehicle). I have included a link to our help article with tips...
    view full answer...
  • Wiring and Parts Needed to Connect Clearance Lights with Wiring Circuits on a 1998 Lazy Daze
    If the wiring on your replacement clearance lights don't quite reach the wiring on your 1998 Lazy Daze then you can simply purchase 16 Gauge Wire # 16-1-1 which is sold by the foot, and then use Butt Connectors # DW05744-5 or # DW05744-10 to splice the wires together. We also have the Trailer Wiring Installation Kit # HM51010 you can use for the installation which includes a variety of connectors, electrical tape, zip ties, a circuit tester, and a wire tool.
    view full answer...
  • Adding a 7-Way for Lights and Battery Charge to a 1998 Toyota 4Runner
    There are a couple of parts you will need to get the 7-Way connector you have working on your 1998 Toyota 4Runner. First you will need to install a harness for the lights on the trailer. For that use # 118341. The output side of this harness has a 4-Way flat connector. If the 7-Way you have has a mating 4-Way then you would just plug the two in together. If not then you would cut the 4-Way off and hardwire the wires to the 7-Way. White is ground, brown is running lights, green is right...
    view full answer...
  • Will the Prodigy RF Brake Controller Work with a 2017 Chrysler Pacifica Touring
    The Prodigy RF brake controller # 90250 can be used with your 2017 Chrysler Pacifica and it will not void the warranty on the vehicle. This controller installs on the trailer so nothing is being hardwired into the vehicle. In order for the RF to work the vehicle just needs to have a functional 7-Way trailer connector. That is one the RF gets its power and how it knows when the brake pedal is being pressed in the vehicle. If your Pacifica Touring does not have a 7-Way trailer connector...
    view full answer...
  • Adding a 7-Way Trailer Connector to a 2003 Ford Expedition with Factory 4-Way
    On your 2003 Ford Expedition follow the 4-Way connector wiring forward on the vehicle until it meets another connector. On this forward connector, if you peel back the loom covering the wires you will see there are more wires going into the plug than coming out to go to the 4-Way, There should be an orange wire and a blue wire. You will need these wires if you intend to install a 7-Way and the trailer requires 12 volt power and has electric brakes. You will need 4- to 7-Way adapter...
    view full answer...
  • Adding a 7-Way Connector to a Tow Vehicle to Use the Prodigy RF Brake Controller
    In order for the Prodigy RF brake controller # 90250 to work the tow vehicle will need to have a 7-Way connector with function light circuits and a functioning 12 volt circuit. Since your truck already has a 4-Way you will just need a couple of parts. First you will need a 4- to 7-Way adapter # 37185. Your 4-Way will plug into this adapter to provide the lighting functions. The white wire on the adapter will need to be grounded to the vehicle frame. Next you will need about 25 feet...
    view full answer...
  • Availability of a Replacement Spade Terminal for Thin-Line LED Racing Light Kit # LS-108
    You are talking about a spade terminal I believe. Those are available at just about any hardware store. If you did need a switch, you could use # D16740. You may also need some electrical tools and tape. We have a kit, # HM51010. No spade terminals in this kit but everything else you might need.
    view full answer...
  • No Wiring for Electric Trailer Brakes in 2013 Toyota Tundra 7-Way Trailer Connector
    So on your 2013 Toyota Tundra 7-Way trailer connector there is no wire in the back at the 7 o'clock position? If that is the case all you will need to do is get about 20 feet or so of wire # 10-1-1, sold by the foot, attach it to the back of the 7-Way in the 7 o'clock position, then route it under the truck, into the cab, and attach it to the blue wire coming from the back of the controller. When routing the wire avoid areas that can pinch or burn the wire. You may or may not have to...
    view full answer...

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Info for this part was:

Installed by:
Cole B
Updated by:
Alexander C

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