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Roadmaster Hy-Power Diodes (Qty 3)

Roadmaster Hy-Power Diodes (Qty 3)

Item # RM-793
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RM-793 - Diodes Roadmaster Accessories and Parts
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Roadmaster Accessories and Parts - RM-793

  • Tow Bar Wiring
  • Diodes
  • Roadmaster


Roadmaster Hy-Power Diodes

Diodes permit electrical current to flow in only one direction - from the motorhome to the car - preventing electrical feedback and the damage it can cause to the towed car's electrical components.

Features:

  • Qty: (3) Diodes
  • Reduces wiring hassles
  • Trouble free operation
  • Includes detailed wiring instructions
  • Maximum load is 85 amps per diode

Note: 4 Diodes are required for most applications (1 left turn/brake, 1 right turn/brake, 2 for tail lights - each side).


793 Roadmaster Hy-Power Diodes





Video of Roadmaster Hy-Power Diodes (Qty 3)

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




Video Transcript for Roadmaster Tow Bar Wiring RM-793 Review

Speaker 1: Today we're taking a look at the Roadmaster high powered diode. Now this will allow motor homes or RV's to power the lights on the towed vehicle without power feedback. The diodes allow electrical current to flow in one direction, so that'd be from the motor home to the vehicle or to the car.This prevents any electrical feedback and the damage it may cause to the electrical components. This is available in a variety of quantities, so you can get a one pack, a two pack, three pack, or four pack. All options are available at etrailer.com. For a one pack, use part number RM-790, for two pack use part number RM-792, for a three pack use part number RM-793, and for a four pack part number RM-794.The spade connectors allow for easy treble free wiring connections.

Also on the back of the packing it has detailed wiring instructions. So that's really going to be helpful. So when you get these, please do not discard the packaging because it has the nice wiring instructions on the backside.The aluminum heat sync helps prevent overheating, the self stick pad on the back allows for easy and secure mounting. Maximum load is 85 amps per diode, and please note that four diodes are required for most applications. One for the left turn brake, one for the right turn and brake, and then two for the tail lights, one per side.That's going to do it for today's look at the Roadmaster high powered diode..


Customer Reviews

Roadmaster Hy-Power Diodes (Qty 3) - RM-793

Average Customer Rating:  4.9 out of 5 stars   (207 Customer Reviews)


by:

When converting 4 pin to 7 pin, I used this kit as a source for trailer aux (4-pin brown) after other troubleshooting failed. A shop installed my 4 pin controller and it turns out my car doesn't supply a voltage to the quick-clipped lead for brown (and has an empty light bulb holder reserved for another model). Yes the leads in the kit are thin, but so are stock leads pumping 12v.




by:

I needed a way to flat tow my 1951 M38 Korean War Jeep (converted to 12 volt). I picked up three of these diodes (stop, Left, right) and wired them into my jeep and trailer harnesses . Now when I connect the Jeep to my tow vehicle, the Jeep tail lights slave off the tow vehicle, yet when I disconnect my tow vehicle, the Jeep light revert back to the jeep harness. Made my flat tow capability very easy. Input side is two connectors, output side is single connector. One small issue is I needed a couple extra after market solder-less connectors since the ones that came with the diodes were too large for the trailer harness wire I was using. Crimping the connectors were not a tight enough connection....but with smaller connectors, the diodes now work great. Been using them for over a year now with zero issues.




by:

They work great. No issues.


Comments
Perfectly
Walter - 07/29/2022


by:

Excellent way to prevent backfeed on tow and towed vehicle.




by:

They work as expected. I installed them near a junction box for secondary backup lights on my truck. They allow me to use a switch to turn on the LED lights as well as them come on automatically when my truck is in reverse. I've recommended these to several other folks that need additional lighting solutions on their vehicles or trailers.




by:

Installed 6 of these to wire up my 04 Honda CR-V as a Toad. They work great so far, lights come on from either the CR-V or the RV. Nice that they come with the terminal lugs so all you have to do is strip and crimp the wires.




by:

It fit my Explorer perfect and works great when I tow it behind my motorhome.




by:

Nice product. Works as described. Saves causing damage to vehicles electrical system.




by:

Product works really well and looks very clean when installed. I only needed two for my application, so the 3-pack ensured I always have a spare as well.




by:

work great


Comments
You sell the best products
ronald L - 05/29/2017


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Review from a similar Hy-Power in Accessories and Parts


Easy installation instructions. They work great!




by:

Review from a similar Hy-Power in Accessories and Parts


Easy to install and solved the lighting problem that I had. I had put a center light in and it became the connection that linked my left and right systems together, causing both blinkers to flash instead of just the one selected. A diode is the answer in this situation. Seemed like a really good quality part too. I’m not sure but might be US made. Etrailer has been a great place to find the things I’ve needed over the years.




by:

Review from a similar Hy-Power in Accessories and Parts


Works as expected. Only problem plugging electric to car sometimes not so great .Overall the Sterling setup is wonderful .


Comments
Worked great as it should ,some times plug elec.lines not so good
Gary S - 08/21/2021


by:

Review from a similar Hy-Power in Accessories and Parts


I purchase these to set up my toad (CR-V) with the Road master 7 to 6 wiring kit along with the 2 back into 3 wire module to allow for me the use the turn signal lights (Yellow) operate separately from the brake lights so that the toad lights all work as they were set up by the manufacturer. This way also allows you to avoid having to buy the brake light relay if your vehicle brake lights are energized by the mechanical function of your braking system. Your overall cost is relative and as stated all of your lights work instead of the typical stop/tail/turn signal bulb on each side.


Comments
still great looks and works professionally
Carl - 06/10/2020


by:

Review from a similar Hy-Power in Accessories and Parts


I needed to charge my tow vehicle battery by taping in to my tail lights on my motor home. This will prevent The tail lights on the tow vehicle from feeding from its own battery. My break buddy was depleting the tow vehicle battery on long trips. Solved my problem!


Comments
Working great, no problems
Jon l - 06/20/2019


by:

Review from a similar Hy-Power in Accessories and Parts


Good product with excellent service! I can now use my reverse lights as work lights without back feeding my truck. Works great to correct those who have a have a habit of driving behind you with high beams on....




by:

Review from a similar Hy-Power in Accessories and Parts


Exactly what I needed for my Ram 2021 Truck to flat tow




by:

Review from a similar Hy-Power in Accessories and Parts


Perfect for connecting the tail lights from my RV to my car on the car dolly.




by:

Review from a similar Hy-Power in Accessories and Parts


Works great




by:

Review from a similar Hy-Power in Accessories and Parts


I have used these in the past so when i got a new tow vehicle i bought them again.
They make wiring up the lights on a tow vehicle a snap. I have never had one fail.


Comments
still working good
Travis S - 08/31/2020


by:

Review from a similar Hy-Power in Accessories and Parts


Work well on my Jeep Wrangler p




by:

Review from a similar Hy-Power in Accessories and Parts


I added accessory back up lights to my truck. I wanted them to work with the truck back up lights and be able to turn them on with a switch in the cab. I did not want to chance backfeed when I used the switch, so I bought this. Only have had it installed for a week and no problems works the way I wanted it to.



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See what our Experts say about this Roadmaster Accessories and Parts



  • RV Brake and Towed Vehicle Brakes Both Applied via Diodes
    I spoke with my contact at TowReady and he said the brake lights will come on normally when both the brake pedal on the RV and towed vehicle via a Brake Buddy are applied. He said if either brake is pressed the brake lights will come on. When both brake pedals are pressed at the same time the brake lights will come on. He also said 2.1 amps per side is plenty to handle your CR-V's brake light. They should illuminate normally when both the RV and towed vehicle brake pedal are applied.
    view full answer...
  • Are the Roadmaster Hy-Power Diodes Water Tight
    As long as you are not exceeding the 85 amps at 12 volts per diode max load then you can definitely use the configuration in your diagram. I spoke with my contact at Roadmaster who said that the connections are not watertight but the internal components are. You would either need to find a way to make the connections watertight (as you mentioned in your diagram) or simply wipe the connections off if you were to go off-road with your 2011 Jeep Wrangler and get the diode(s) wet. We have...
    view full answer...
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  • Maximum Amp Rating of Roadmaster Hy-Power Diode
    The Roadmaster Hy-Power Diode # RM-790 is rated for a maximum of 85 amps. This is for a single diode but is also available in different quantities if you need: - Quantity of 1: Roadmaster Hy-Power Diode # RM-790 - Quantity of 2: Roadmaster Hy-Power Diode # RM-792 - Quantity of 3: Roadmaster Hy-Power Diode # RM-793 - Quantity of 4: Roadmaster Hy-Power Diode # RM-794 I have added links to video reviews for you to check out as well.
    view full answer...
  • Does Roadmaster Hy-Power Diode Have Any Voltage Drop
    The Roadmaster Hy-Power Diodes haven't been tested for voltage drop since they are designed to be a pass-thru device that just keeps backfeeding from happening. When I reached out to my contact at Roadmaster they said that the voltage drop would be very minimal if anything. I like the Hy-Power Diodes because of how durable and effective they are. You can get this diode in a handful of qunatities: 1 - # RM-790 2 - # RM-792 3 - # RM-793 4 - # RM-794
    view full answer...

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Info for this part was:

Employee Dustin K
Video by:
Dustin K
Employee Cole B
Installed by:
Cole B
Employee Bradley B
Installed by:
Bradley B

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