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We highly recommend this fuse bypass switch if you need to deactivate a fuse when you flat tow. It's a huge pain to pull the fuse by hand every time, and you risk losing or damaging it. With this kit, you just have to flip a switch.
Features:
Specs:
Note: Consult your owner's manual to determine which fuse to pull.
Technically, it is optional, but if you need to pull a fuse on your vehicle when you flat tow, this kit will make your life so much easier. Instead of wedging yourself down on the floorboard and fishing a tiny fuse out from under your dashboard every time you flat tow (not to mention putting it back again), you can just flip a switch. No dead battery, no lost fuse, no damaged fuse, no back pain.
When the switch is in the drive position, the fuse will be active and your car will function normally. When you're ready to flat tow, you'll flip the switch to the tow setting and deactivate the fuse. This allows you to tow your vehicle without the battery draining.
Installing this fuse bypass switch really only takes a few steps:
1. Open the fuse access panel and remove the designated fuse
2. Connect the end of the wiring harness to the fuse socket
3. Mount the switch in your dashboard
4. Insert the pulled fuse into the fuse holder
See the installation instructions for more details!
Customer Satisfaction Score:
91% were satisfied with this product
9% of customers were not satisfied
Ratings & Reviews
Works as advertised but a little difficult to install.
It is exactly what I ordered. Installed easily and works great
The directions were clear and applied to my specific vehicle. Successfully installed in a reasonable time. Happily traveled many miles without grief.
Thank you
Exactly the product I needed. Easy to operate. Simply pressing a button sure beats pulling out fuses every time we tow our CRV.
Great product, very easy to install and use.
wiring harness was vey good
I had a mechanic put this on my 2014 Honda CRV. Works great not one problem after one year and 5000 mikes.
Good instructions, the leads could have been longer, if there's a choice, get the kit with longer leads.
They got me my purchase to me in 3-4 days even though I used the free shipping.
Fairly easy to install and works as intended clear instructions really helped. Installed on 2019 Buick Envision
Perfect. Great installation video. Works as advertised.
DOes the job.
The lock has started to rust and is hard to unlock with the key even though I have kept the rubber keyhole cover in place to protect it.
Easily preps vehicle for towing and dri ving.
Very handy, installation on buick envision required shortening protective sheath due to tight space around fuse block.
The order was shipped immediately and I received it within just a few days. The video on the website was very very helpful. I was able to install everything myself in just a few minutes, except I couldn't get the wires to connect in the fuse holder. I had to take it to a mechanic, and he trimmed back the insulation so the ends were long enough to be able to slide into the fuse box. Also I had trouble reaching one of the fuse connections in the fuse box. This was no fault of the product. Just my 70 year old body would bend in the right places so I could reach it, and my 70 year old eyes had trouble seeing up close. I haven't towed the car yet, but apparently everything is working as it should.
This is not user friendly! I had to make an
Adapter to hold the small knife blades in the fuse holder in the fuse panel on my 2012 Honda CRV , also , with bypass switch in tow ,lights are still on the dash ?
excellent products that i had purchased from etrailer. i like the ease of operating the tow products and especially the great job that etrailer did in installing the tow products from the motorhome and to the tow vehicle . etrailer was very professional in everything that they did.
The only thing that could make this product better and easier to install would be for it to include a fuse-style plug for the wiring into the fuse box. ETrailer has done everything they can to clearly show what is involved with the installation, so I wasn't surprised, but Roadmaster could make the installation easier with just a little extra.
This is a great concept to solve this fuse pulling issue however I found the leads too short to work with properly. Combined with the fact that the leads where not the same length and that the connectors are almost impossible to install individually into the fuse panel I had to do some re-enginnering. It wasn't too hard to fix really. I simply purchased some ATM fuse jumpers and plugged your connector into it while out on the bench, then when I went to install it into the car I had a solid one piece connector to push into my cars fuse panel. For some who have easier access to the fuse panel these connectors might work fine for for any kind of tight location a single point fuse connection would be a big improvement.
The fuse bypass switch should be maybe $xx MAX - since it’s just a switch, some wire, a fuse socket and bits and pieces.I bought them figuring I should rely on Roadmaster expertise on manufacturing something that is better than what I could put together, but now that I’ve installed all the items, I think I could have just bought the parts and assembled them to work better than these items. The only issue I had with one item was that on the fuse bypass, the little metal prongs at the end of the two wires that you are supposed to plug into the fuse panel should have been a single two prong plug - the same size as a mini or micro fuse, because as single wires and prongs, there’s no way they’d stay plugged into the fuse block securely. I had to buy a couple of fuse “extender cables” and wire them up to the fuse bypass wires to make those work like a standard 2 prong mini or micro fuse works - they plug in as a single unit with two prongs.
Both of these issues - cost and single prong ends on the fuse bypass - I’ve seen mentioned in other reviews of these products, so I know etrailer is aware of your other customers complaints on these items. But what will anything be done about them? I doubt it.
Not Happy this 78512 part number. It cost 85 dollars and even though Road Master could have furnished necessary fuses they did not. The 76511 kit comes with a fuse adapter which makes the installation easier and safer. After calling Road Master technical support directly and asking for the fuse adapters like provided for in the 76511 kit for the 78512 the tech stated the adapter was only used on CRV models. This was not true the installation video clearly shows these adapters were show to be installed on a Honda Fit 78511 part number install. I think these switch harnesses are wildly overpriced and dangerous the way the way they show installing them with installations that deal with low profile mini fuses. I have lost all faith in Road Master products. I think Road Master's tech support needs some retraining. I think etrailer should no longer handle these products. Still waiting for a return call from Road Master about purchasing the adapters as a separate item.
etrailer installed a complete Roadmaster RV towing system on my 2019 Chevrolet Sonic RT. Installation was very professionally done and have since towed the Sonic behind my Fleetwood Excursion about 5000 miles with no issues. My Sonic has a passive door looking feature (fob) which requires a Roadmaster on/off switch kit to eliminate having to pull fuses. The kit has two switches which are mounted on the dash and labeled Drive or Tow. On this model Sonic it is important that the switches are turned on/off in the right sequence as not to affect other computer controlled systems. The passive system was new in 2019 and with the help of etrailer and Roadmaster we were able to determine the sequence. I printed the sequence on a card that I keep in the glove box.
Receive the correct wiring harness after I informed etrailer that I had ordered the wrong part. Customer service is great. Will use them in the future
Norman K.
1/30/2022
No longer RVing. The wiring harness is too short. It needs to be about 2 inches longer
Works great so far, haven't towed the car but put the switch in tow mode and it worked as it should. put in drive mode and car started right up. The installation process is easy enough but there isn't much room around the fuse box to run additional wires.
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Randolph
3/22/2025
Installed myself. Still works well. No complaints. Been used over 5000 miles.