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Roadmaster 7-Wire to 6-Wire Straight Cord Kit - 6-1/2' Long

Roadmaster 7-Wire to 6-Wire Straight Cord Kit - 6-1/2' Long

Item # RM-98146-7
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Roadmaster Accessories and Parts - RM-98146-7
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Easily and effectively connect your motor home to your towed vehicle with this water-, oil- and chemical-resistant electrical cord. Perfect for RoadMaster's All Terrain tow bars and tow bars with cable channel guides. Call 800-298-1624 to order Roadmaster accessories and parts part number RM-98146-7 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for Roadmaster 7-Wire to 6-Wire Straight Cord Kit - 6-1/2' Long. Accessories and Parts reviews from real customers.
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  • Reviews (17)
  • Q & A (16)
  • Videos (6)
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Roadmaster Accessories and Parts - RM-98146-7

  • Tow Bar Wiring
  • Extension
  • Roadmaster
  • 7 Blade to 6 Round
  • Straight Cord

Easily and effectively connect your motor home to your towed vehicle with this water-, oil- and chemical-resistant electrical cord. Perfect for RoadMaster's All Terrain tow bars and tow bars with cable channel guides.


Features:

  • Adapter cord can be used for multiple towing applications
    • Perfect for running power from your RV - with the 7-pole - to your towed vehicle or trailer
  • Straight cord model is ideal for all-terrain tow bars and other tow bars that have channel guides
  • Silicone-injected plugs prevent corrosion
  • Electrical cord is resistant to water, oil and chemicals
  • Cord has 7-way trailer connector installed
    • 6-Way trailer connector (included) is uninstalled so you can match the wiring on your towed vehicle or trailer
    • 6-Way socket also included
      • Socket mounting bracket is included
  • Made in the USA


Specs:

  • Length: 78"
  • Wire gauge: 16


98146-7 Road Master 7-Wire to 6-Wire Straight Cord Kit - 78" Long





Video of Roadmaster 7-Wire to 6-Wire Straight Cord Kit - 6-1/2' Long

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




Video Transcript for Roadmaster 7-Wire to 6-Wire Straight Cord Kit Review

Today we'll be having a look at the Roadmaster seven wire to six wire straight cord kit, part number RM-98146-7. Here's what it looks like installed. As you can see, being routed inside of our channel here on our all terrain tow bar, it will keep the cable from dragging on the ground when we're hooked up to our car behind us and we're flat towing it. The six and a half foot long cable that we have here will give us adequate length in order to do tight maneuvers, such as going around corners. Now when we're not flat towing our car, we can actually still leave it connected to our RV, and just store our tow bar like normal. Our safety cable is here on the other end. We can just wrap around the tow bar, and secure them up and out of the way with a zip tie if we want. Or if we have a tow bar storage bag, we can store it inside the storage bag, and wrap it up with the included loop and strap there. When we're ready to tow our vehicle behind our RV, we'll just reverse that process.

Hook up our safety cables, the tow bar, and the connector, and we're ready to get on the road. One thing that our customers have pointed out, a lot of people have questioned why the tip of this is plastic. Because if you tighten the set screw here too much, it can damage the plastic. The reason it's plastic is so if there's any corrosion that happens inside here, the plastic won't conduct any electricity, and it won't cause any shorts between the other pins inside this connector here, potentially causing damage to your tow vehicle, or back feeding voltage to your RV, damaging it as well. That's why you want to have a plastic connector here, versus a metal one. Some customers have also noticed that the wiring diagram here, Diagram A on the back of the package which helps you do your wiring codes, this is the industry standards for the colors that are on the back of your seven way, not for the wire colors that are on the bare ends that you're putting on the end of your six way. Over here, your brake light, that will be your electric brake wire for terminal S.

That's your blue wire. The auxiliary is your charge line, that's your black wire. Your right turn signal, that's your green wire. Your tail light and marker, that's your brown. Your ground is your white wire.

Your left turn signal is your yellow wire. That's something to keep in mind. We have a nice chart on our website too if you'd like to look one up for the wiring color codes if you need it. Now that we've one over some features of our Roadmaster seven to six wire straight cord kit, we'll show you how to install it. First thing we need to do is locate which side on our RV our seven way is on. In our case, it's on the driver side.

Now that we've located our seven way, we'll take our tow bar here, get it in position. We don't need to connect to our vehicle, we just need to get the arms extended out to run our wire through. We'll be running our wire through the driver side of our tow bar. Now we have a Roadmaster Falcon all terrain tow bar here. This will work on all terrain tow bars, or any other one that has a cable guide through the frame. We'll just slide it on through from the front, making sure our seven way is at the front. Once we have it slid through, we can start working on attaching our connector. On the bottom of our six pole round connector here, we'll see that there are two Philips screws, a small one towards the end and a larger one at the other end. We'll remove these. Slide this connector on out. We'll loosen this other one out here enough so we can slide our cable on through. We'll slide it on down like so, and we'll start with our connections. These are labelled. We'll start with the left turn signal, it's the one marked, "L". We'll loosen that set screw. This is also our left brake light in our vehicle. For that, it gets the yellow wire. Push that on in there, and we'll tighten the set screw back on down. We'll do our ground next. It's the one marked, "G". That will get our white wire. We're doing our tail lights now. It's the one marked, "T". That will get the brown wire. We'll do the right turn signal now. That's the one marked, "R". That will get the green wire. Now we'll do our charge line. That's our black wire, and that goes right in the middle. Now we'll do our electric brake signal wire, or our stop light wire, depending on your application. That's the blue wire, and that's the one that goes to the terminal marked, "S". We'll make sure all of our wires are in there nice and tight now. Now we'll slide our plug over the connector in, and we'll reinstall our small set screw. We'll make sure it's nice and snug. Now we'll tighten down the set screw here, which secures our cable into the connector. This will keep it from getting pulled out accidentally. Now to finish our install here, we can take our seven way plug, and plug it into our RV. That completes our look at the Roadmaster seven wire to six wire straight cord kit, part number RM-98146-7.


Customer Reviews

Roadmaster 7-Wire to 6-Wire Straight Cord Kit - 6-1/2' Long - RM-98146-7

Average Customer Rating:  4.8 out of 5 stars   (17 Customer Reviews)

Easily and effectively connect your motor home to your towed vehicle with this water-, oil- and chemical-resistant electrical cord. Perfect for RoadMaster's All Terrain tow bars and tow bars with cable channel guides.

- RM-98146-7
by:

Straightforward to install. This item is necessary since Roadmaster does not include it with the towbar. If this was part of the towbar the wire could be threaded into the towbar and factory-sealed to the wiring connector instead of the purchaser having to make the connection and sealing it themself.


Comments
Thank you for your review. The tow bar wiring is not included with the tow bar because not everyone needs the same connectors. This particular wiring is for a flat towing setup with a 7-way blade connector on the motor home and a 6-way round connector on the vehicle. You can purchase a cord where the 6-way round plug connector is already attached with part HM47054.
-- Etrailer Expert Heather A - 04/19/2021


- RM-98146-7
by:

Easy to install and used with my Roadmaster tow bar they are self-storing.



- RM-98146-7
by:

I ordered several Roadmaster components from etrailer.com to set up my 2014 Honda CRV as a toad. I can't say enough about how helpful etrailer's website is with all of their product review videos and installation videos. Their customer support is also top notch. Regarding this component (Towbar Wiring Harness), its good quality. I would have preferred a metal plug end for the 7 pin connector (like the other end of the 6 pin connector) but perhaps there is a reason it is plastic. Be careful not to screw in the set screw too deep as it will start to distort the plastic housing. The other recommendation is for Roadmaster to change the wire color key on the directions for the 7 pin. While the wires were prewired correctly, the schematic is wrong relative to the wire colors. Etrailer's tech information has a much clearer schematic for a 7 pin plug than what is provided by Roadmaster. All in all, this harness fits nicely in my Roadmaster Falcon All Terain tow bar channels and is the correct length.



- RM-98146-7
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- RM-98146-7
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No issues with the kit. Has worked perf ectly.



- RM-98146-7
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Fits nicely in my Roadmaster tow bar. Works well. Still looks like new after 1 year of service.



- RM-98146-7
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This is the second time I have used them for parts needed, and have been extremely pleased. Great service, prompt attention given to both orders, didn't need expedited service or delivery because they came quick and easily . I would highly recommend this company.



- RM-98146-7
by:

Needed a replacement wire harness for towing. Ordering process and delivery of harness went smoothly.



- RM-98146-7
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Fantastic product! Easy to install.



- RM-98146-7
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Just arrived here. Opened the box and liked the quakity. Plan to install next weekend.



- RM-98146-7
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Works Great.



- RM-98146-7
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I have used this product before on other tow viehicles and it has worked well for us, I bought it again, says it all.



- RM-98146-7
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PERFECT



- RM-98146-7
by:

Excellent service!! My order was received early and the follow up was great! Thank you



- RM-98146-7
by:

No problems with it.


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Ask the Experts about this Roadmaster Accessories and Parts

  • Roadmaster 7-Wire to 6-Wire Straight Cord Kit without the 6-Way End Attached
    It sounds like you are talking about straight cord kit # RM-98146-7. It plugs into a 7-way RV style connector on one end. the other end has just blunt cut wires and there is a 6-Way end that you would attach those wires to. It also comes with the mating 6-Way to plug into. I have linked a video review for you. You can also use bend bracket # RM-910030-5 or straight bracket # RM-910030 to mount the 6-Way receptacle part.
    view full answer...
  • Replacement Cable For Roadmaster Sterling Tow Bar
    The RoadMaster 7-Wire to 6-Wire Flexo-Coil Kit # RM-146-7 can expand to over 8 feet. It keeps coiled shorter for compact storage and to keep from dragging while in use. If you are looking to run the cable through a tow bar channel, I recommend the Roadmaster 7-Wire to 6-Wire Straight Cord Kit - 6-1/2" Long # RM-98146-7 which is 78 inches long but can be trimmed to length.
    view full answer...
  • Wire Gauges Used in RoadMaster 7-Wire to 6-Wire Straight Cord Kit # RM-98146-7
    I spoke with my contact at Roadmaster about the 7-Wire to 6-Wire straight cord, # RM-98146-7. All of the wires inside of it are 12 gauge.
    view full answer...
  • Replacement 7-Way Trailer Connector or 7-Way to 6-Way Harness for a Motor Home
    We have several 7-Way to 6-Way round kits that you could potentially use but it sounds like you are looking for one such as # HM47057 with the straight cable and already assembled. But if you just need to replace the 7-Way end on the RV then you could do that it you want. If the 7-Way has a round plug at the back that just plugs into it then you could use # PK11893. Otherwise you would need to hardwire one in using # PK12-707E.
    view full answer...
  • How Long is the RoadMaster 7-Wire to 6-Wire Straight Cord Kit
    The RoadMaster 7-Wire to 6-Wire Straight Cord Kit, item # RM-98146-7, is 78 inches long, so that would not work for your application. You can put a cord together to get the length you need with a few parts. Start with the 6-Way Molded Trailer Wire Connector, part # H20036, which is 96 inches long. Then add the Pollak Black Plastic, 7-Pole Trailer Connector, part # PK12706. For the towed vehicle, you will also need the Pollak 6-Pole Round Pin Trailer Wiring Socket, part # PK11609, unless...
    view full answer...
  • Wiring and Supplemental Braking System to Flat Tow 2017 Jeep Wrangler
    The Roadmaster Universal Hy-Power Diode Wiring Kit # RM-154 is a 4-wire kit that gives you a 4-flat at the front of your 2017 Jeep Wrangler so what you can do is use cut off that 4-way and wire it into the Roadmaster 7-Wire to 6-Wire Straight Cord Kit # RM-98146-7; you are correct a straight wire is a better option than coiled for an all-terrain tow bar like your Falcon # RM-522. There are some other parts you will need as well, including Safety Chains # RM-643 if you do not already...
    view full answer...
  • Replacing Tow Bar Wiring 4-Way Connector with a 6-Way on a 2011 Lincoln MKX
    On the Hopkins tow bar wiring harness # HM56002 on your 2011 Lincoln MKX you will have to cut off the 4-Way flat end and hardwire each of the wires to the back of the 6-Way contained in kit # RM-98146-7. I have included a link to a help article that shows how various connectors are wired including a 6-Way and 7-Way to help. Remember that the 6-Way end at the front of the Lincoln is a vehicle side and not a trailer side.
    view full answer...
  • Charging Battery on 2005 Jeep While Being Towed Behind Motorhome
    In order to get power from your motorhome to your 2005 Jeep while you're flat towing you'll need a working 7 way with 12 volts. Since the front of your Jeep has a 4 way flat on it you will need to change out the plug because all 4 wires are being used. The tail light circuit won't have enough power to charge the battery and run the lights on your Jeep, however you won't be forced to rewire everything, just the plug on the front of the Jeep. If you don't have 12V at the back of the 7...
    view full answer...
    Image 1 for
  • Flat Tow 2021 Jeep Wrangler Unlimited Demco Base Plate Sterling Tow Bar
    The Demco Tabless Base Plate Kit # DM9519336 is the correct base plate for your 2021 Jeep Wrangler Unlimited. This kit is designed to work with the Roamaster Sterling Tow Bars #RM-576 without any adapters. For the Blue Ox Patriot 3 # BRK2019 to work with your Wrangler you will need to add a couple parts. The first is a 12 Volt Outlet Kit # RM-9332 for constant power when the ignition is switched off. Second is a Battery Charge Line Kit # RM-156-25, this will keep your battery charged...
    view full answer...
  • What Is Needed To Flat Tow A 2017 Jeep Wrangler 4WD Sport
    Absolutely! First you will need a Base-Plate Kit and Tow Bar. I recommend the Roadmaster Crossbar-Style Base Plate Kit - Removable Arms # RM-521448-4 which is confirmed to fit your 2017 Jeep Wrangler as long as it is not a Winter, Hard Rock, or 75th Anniversary model. For a Tow Bar I recommend the Roadmaster Falcon All Terrain # RM-522 which is a great system that has a non-binding design that allows you to release your vehicle at any time even on uneven ground. Next you will need...
    view full answer...
  • Wiring Color Code On Ford Motor Home With 7-Way Connector And Car To Be Towed Has 6-Way Connector
    The 6-wire and the 7-wire connectors will have the same color codes on six of the wires. The green wire is right turn/brake, the yellow wire is left turn/brake, the white wire is the ground, the brown wire is the taillights, the blue wire is electric brakes, and the black wire is the 12v power. The 7-way motorhome connector will have an extra auxiliary wire (purple) on the center pin that is used for reverse lights, 12v power, or reverse lockout for trailer brakes. There are two...
    view full answer...
    Image 1 for Image 2 for
  • Replacement Wiring Connector from Motorhome to Jeep for the Falcon All-Terrain Tow Bar
    We do have a variety of wiring kits from Roadmaster that are used for flat towing with your Falcon All Terrain # RM-522. I am not quite sure which one you have but I will list the ones out that can be run through your tow bar. For blue wires we have the 7-Wire to 4-Wire Straight Cord Kit # RM-98164-7 and the 4-Wire Straight Cord Kit # RM-98164. If you have a larger connector on on your Jeep then we also have the 7-Wire to 6-Wire Straight Cord Kit # RM-98146-7 and the 6-Wire Straight...
    view full answer...
  • Installing Battery Charge Line To Power Tow Vehicle
    The Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25 and the Roadmaster Battery Charge Line Kit for Motor Homes # RM-156-75 will allow you to power your tow vehicle through a 6-way or 7-way wiring connection between vehicles. If you want a separate connector you can run a cord for that, but most people use the 12V pin or another unused pin and the 7 to 6-way cable to power their connection using a cord like the Roadmaster 7-Wire to 6-Wire Straight Cord Kit - 6-1/2' Long...
    view full answer...
  • Tow Bar Wiring Recommendation for Roadmaster All-Terrain Tow Bars
    For the all terrain tow bars the non-coiled wires are recommended since the arms telescope and the all-terrain bars come with guides. But if you really wanted to use the # RM-146-7 with an all-terrain bar you can technically still do it. A better recommendation would be the # RM-98146-7 as this is a straight cord. However, I attached a picture that shows the # RM-146-7 being used with the Falcon 2 Tow Bar part # RM-520 which is an all-terrain tow bar.
    view full answer...
    Image 1 for
  • Availability of A 7- way Adapter to 6-pole Round Male Connector
    The Hopkins Heavy-Duty, Coiled Trailer Connector Adapter - 7-Way to 6-Pole Round - Center Pin Auxiliary, item # HM47083, is designed to go from the the 7-way connector on a towing vehicle to a 6-way female connector on the towed vehicle. The center pin on the 6-way end is wired for 12 volt auxiliary function. If your towed vehicle has a male connector on it, to operate the brake lights when being towed, then you will need the RoadMaster 7-Wire to 6-Wire Flexo-Coil Kit, item # RM-146-7,...
    view full answer...
  • Wiring Options for Flat Towing 2015 Jeep Wrangler Unlimited Behind Motorhome
    What specific questions do you have? There are three types of taillight wiring options for the 2015 Wrangler Unlimited. What we typically recommend is a diode system like the Roadmaster Diode Kit, part # RM-152-98146-7. This is a permanently mounted system that provides everything necessary to set up your Wrangler Unlimited so it's taillights operate in tandem with the taillights of the tow vehicle. The included umbilical includes extra circuits which can be used for a battery charge...
    view full answer...

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