Extend the length of your towing system without having to buy new safety cables. Extensions add an extra 12" so you can use high-low receivers, hitch extensions and other accessories. Call 800-298-8924 to order Roadmaster accessories and parts part number RM-910648-12 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for RoadMaster 12" Safety Cable Extensions - 1 Pair. Accessories and Parts reviews from real customers.
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Accessories and Parts > Safety Chains and Cables, Tow Bars > Safety Cable Parts > Loop Extensions > 12 Inch Long > 8000 lbs GTW > Roadmaster

RoadMaster 12" Safety Cable Extensions - 1 Pair

Roadmaster Accessories and Parts

(8 reviews)

Code:   RM-910648-12



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Roadmaster Accessories and Parts - RM-910648-12

Extend the length of your towing system without having to buy new safety cables. Extensions add an extra 12" so you can use high-low receivers, hitch extensions and other accessories.


  • Extends safety cables for use with accessories that increase the length of your towing system
  • Includes cables and quick links
  • Made in the USA


  • Length: 12"
  • Capacity: 8,000 lbs

910648-12 RoadMaster Safety Cable Extensions

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Video of RoadMaster 12" Safety Cable Extensions - 1 Pair

Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.

Video Transcript for Roadmaster Tow Bar Installation - 2012 Honda Fit

Today on our 2012 Honda Fit, well be installing the Roadmaster Sterling All-Terrain Tow Bar with 6-Wire Electrical Cord, part #RM-576. To begin with, our vehicle already had the base plate installed. Now we will need to go ahead and remove the 4-flat thats already been connected on this vehicle. We will need to go ahead and find a location to mount our 6-pin bracket to the lower fascia of our vehicle, which is part #RM-910030-5. We will need to remove several fasteners to gain access to the area. Next, we'll need to go ahead and locate a good position to mount our bracket on the lower fascia.

Here we used a right-angle drill to go ahead and drill 2 holes in the lower fascia. You want to make sure before you drills the holes that theres nothing underneath it that could be damaged. Once we have our holes drilled to mount the bracket, you can see how the hardware will go. There will be a bolt, a flat washer, a lock washer, and a nut. We'll need to put the flat washer, lock washer, and nut on the bolts that we pushed through the lower fascia, where we will be attaching the bracket for the wiring.

Now that we have the bracket mounted, we will need to connect the 4-flat wiring to the back of the pin. Make sure you slide the rubber boot over the wiring before you connect it to the back of the 6-pin connector. You will need to use the 4 wires and wire it to the back of the 6-pin connector. The white will go to the ground, the green will go to the right turn; the brown will go to the running lights, or tail lights; and the yellow will go for the left turn. Once you have the wiring completed, you may want to use some electrical tape to help keep the water out, as well as slide the rubber boot over the top again and use electrical tape over the top of this to help prevent water from entering it and corroding the connections.

Now for the actual wire connection that runs from the 7 pull on the back of our tow vehicle, to the 6 pin that we just mounted to the front of our towed vehicle, we will need to make the connection on the 6 pin on this one. The connections on this one are white goes to the ground; green goes to the right turn; brown goes to the taillights; yellow goes to the left turn; the blue goes to the S, or the brake; and the black is the middle one; or the auxiliary. Now on this particular one, the blue and the black will not be used on our vehicle, but its still good to go ahead and connect them. To make the connection on this one, you'll need to undo the small set screw, which will allow you to slide the center section of the plug out, which will allow you to get to the small set screws for actually connecting the wires to the plug. Once your connections are done, you'll want to slide it back into the plug housing, put the small set screw in as well as theres a larger Phillips-head screw that you'll want to tighten down to help secure the wiring so it doesnt pull out of the plug.

Now we'll go ahead and move on to actually setting up our tow bar on the front of our vehicle. On the lower portion of the safety cable attachment, you will notice a small hole on the lower inner side, or towards the middle of the vehicle. This is where the D-ring will connect, as seen here. To begin with, we will start on the passenger side. The mounting bracket on this one is already in the vehicle. You will take the bolt, put it through the safety plate, then through the vertical pin mount, finally through the mounting bracket. While holding it in place, you will put a flat washer, a lock washer, and then a nut. You will do this for both of the holes. Remember, only tighten them finger tight for now. Next, you'll want to take the safety cable anchor, you'll want to make sure that this anchor is an L shape, and that the zigzag portion of the safety cable is to the front. You'll also notice that there will be a small hole on the lower side towards the center of the vehicle. While holding the center of the other bracket, you will insert the carriage bolt through the washer, down through both the vertical pin plate as well as the safety cable anchor. You may want to tighten a little more, as to help hold it in place. You'll repeat the same process on the drivers side, remembering the whole time to try several times inserting the quick-disconnect tow bar to make sure all of the things are still aligned properly. Once you're sure you have everything aligned properly, you can go ahead and torque them down to the specifications listed in the directions. Its time to install the quick-disconnect crossbar. You'll notice that theres a driver and passenger side marking on it. You need to make sure that you insert it properly. You'll put the two pins into the base as well as slide it over the vertical pin. With this in, you will use a linchpin that slides through the hole in the top of the vertical pin, making sure that the flat section of the linchpin is down, snapping the ring over the top, locking it in place. You will do this for both the passenger and the driver side. Now we'll need to take a few measurements. We'll need to measure from the center of the pin that holds the tow bar to the towed vehicle, to the center of the hitch pin hole on the vehicle doing the towing. You need to make sure that theres not greater than a 3-inch variance either up or down on these measurements. You would be measuring from the ground on each. In this situation, it varies by more than 3 inches, so we are going to use a 6-inch high/low drop bar, part #RM-076, to correct this problem and to get it within the 3-inch variance. Now its time to go ahead and install the tow bar assembly itself. You need to insert it into the receiver on the drop piece that we just installed, then put the hitch pin in, as well as the clip to secure it. Now that you have the tow bar installed in your hitch, you'll need to push the latch thats in the center section, which will allow the tow bar to swing up into the upright position. You want to make sure that the two handles on the tow bar are on the top side. If for some reason theyre not on the top side, you have the tow bar upside down and you will need to flip it over in your receiver hitch. You will need to go to the quick-disconnect base plate and remove the linchpin out of both of the tow bar pins and remove them. You'll need to do this for both the driver and the passenger side. Once you have the base pin and the linchpin removed from each side, you will need to extend the arm out on the tow bar. Once you have the arm extended out, you will insert the base pin through the arm of the tow bar, through the bracket, and put the linchpin back in place. You will do this for both sides. Now that thats done, its time to go ahead and hook up the safety cables. On this particular vehicle, because we had to use the hitch extension, we will need to use some safety cable extension as well; 12-inch extension safety cables are part #RM-910648-12. To insert the safety cables, you will notice on the tow bar there is an area underneath it that is hollowed out where you are able to slide the safety cable through and then you will put it into the quick disconnect on the tow bar bracket. You will start at the top working it in and then going through the zigzag pattern, locking it into place on the bottom. Once you've done that on both sides, you'll want to cross the safety chains before hooking them to the tow hook attachments on your two vehicles, as seen here. You'll want to connect the safety breakaway cable as well, and in this instance we connected it to the safety chain loop on the back of the towed vehicle. Now for the wire lead, you will take the 6 pin and connect it to the plug that we installed on the lower fascia of the vehicle earlier. Now on our vehicle, for the electrical wires, we came down to the outside and then wrapped it around the inside of the tow bar one time, and then plugged it into the 7 way. This way, we would keep the electrical wires from dragging on the ground, yet also allowing enough slack to allow for proper turning. Now we're going to show you what it looks like while going down the road, and that will complete the installation of the Roadmaster Sterling All-Terrain Tow Bar with 6-Wire Electrical Cord, part #RM-576, on our 2012 Honda Fit.

Customer Reviews

RoadMaster 12" Safety Cable Extensions - 1 Pair - RM-910648-12

Average Customer Rating:  4.4 out of 5 stars   (8 Customer Reviews)

Extend the length of your towing system without having to buy new safety cables. Extensions add an extra 12" so you can use high-low receivers, hitch extensions and other accessories.

- RM-910648-12

by: George P.05/20/2015

The safety cables arrived yesterday. I tried to put them on the rig today and the threaded fasteners will not open sufficiently to allow placing them on the towbar. I will try a slight hammer to force them onto the bar but this may damage the threads on the device. Will let you know if they need to be returned. 194720

- RM-910648-12

by: Vern C03/03/2015

The cables are fit perfectly and are easy to install. Rebecca N at etrailer was very helpful in my purchase. 176763

- RM-910648-12

by: Charles02/11/2013

As advertised. They were shipped quickly and arrived a day early.Excellent service. Thank you very much 65787

- RM-910648-12

by: DAVE11/25/2013


- RM-910648-12

by: Ted K.08/17/2012

Fast, accurate service. Best prices I've found. 52045

- RM-910648-12

by: Allen f12/08/2014

Great product and good service 163691

- RM-910648-12

by: Frank F.09/20/2015

Look good. 226533

- RM-910648-12

by: Joe01/21/2016

Perfect 235927


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Information for this part was:

Photos by:
Theodore B
Video Edited:
Joshua S
Expert Research:
Adam R

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Info for this part was:

Photos by:
Theodore B

Video Edited:
Joshua S

Expert Research:
Adam R

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