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Roadmaster Single Park Light Diode

Roadmaster Single Park Light Diode

Item # RM-690
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Roadmaster Tow Bar Wiring - RM-690
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Roadmaster Accessories and Parts - RM-690

  • Tow Bar Wiring
  • Diodes
  • Roadmaster


Electrical damage can occur to the towed vehicle if its headlights are turned on while still connected to the motorhome. The Park Light Diode from Roadmaster will stop any interaction between the two park light systems, preventing electrical feedback and electrical damage.

  • Maximum load is 85 amps at 12 volts per diode
  • Qty: (1) Diode


690 Roadmaster Single Park Light Diode





Video of Roadmaster Single Park Light Diode

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




Video Transcript for Roadmaster Single Park Light Diode Installation - 2012 Jeep Grand Cherokee

Today on our 2012 Jeep Grand Cherokee we're going to be showing you how to install the Roadmaster Single Park light Diode that's used on the charge wire. Part number is RM-690. If we've got 12 volt power at the 7 pull in the back of our motor home we can actually use that power to trickle charge the charging system that's in our vehicle. Now to connect to our Park Light Diode we need to run a 12 volt wire from our plug in here at the front of the vehicle on back to where we'll eventually mount the diode closer to our 12 volt power connection source. We just run it kind of through the front of it here just so you have enough to wire it up, and then we can follow along with whatever wiring that we've ran. Those base plates are going to have at minimum a break away switch. In this case we've got an air line and a couple other things.

We'll just go along with it. Now we can take the end of our 12 volt wire and we're going to run it right underneath the coolant back here, and pull our slack on through. Looks good, it's going to sit there nicely. Now right here just inside of the, kind of the fuse box here, there's going to be a flat surface. Now on that flat surface we're going to be mounting our diode into position. It will be pretty much just like that.

What we'll do is bring our wire up. Just go ahead and cut it where we plan on putting the diode. We're going to strip both ends of that back. Then the side that we've got connected to our 6 pull in the front that needs to go to the end. Just pull that female spade connector off there.

Put that down on our wire and crimp it in really well. The other side there we'll put the other spade connector on. This is going to go to the side that says out. Let's connect our wire from the front to the inside. You're going to use a little bit of rubbing alcohol to clean up the area we plan on mounting it to. Then we'll pull the cover off the double sided tape here, get it mounted right into position.

I'm going to pull that end back and wrap this up with some electrical tape just to help keep out any moisture, anything like that, and reconnect it. Do the same thing on the other side here. We're going to slide this on the side labeled out. We'll use a couple of zip ties to get our wire secured off just so it's not moving around on us or anything. We'll do one before we get to the diode and we'll do one after, right here. Now in this particular application it's pretty nice, because we're going to be able to just run that wire right underneath this hose, and then we'll actually be able to go right underneath the cover that's located right there. We can back off the large hex bolt. Trim our wire to the appropriate length and we can add on a ring terminal. This ring terminal is not going to be provided nor is the wire, so pick that up on our website if you plan on doing it in this fashion. That'll go right down over that stud 00:03:49. Put the hex bolt back on, put your hex nut back on. All right, that's all there is to it. Now we've got a trickle feed charge and we're heading down the road. With our charge wire working properly that's going to complete our installation of the Roadmaster Single Park Light Diode. Part number RM-690 on our 2012 Jeep Grand Cherokee.


Customer Reviews

Roadmaster Single Park Light Diode - RM-690

Average Customer Rating:  4.9 out of 5 stars   (61 Customer Reviews)


- RM-690
by:

This diode done extremely well for my application. Used it on my box trailer. Made it where when I go to back up the strobe lights com on with the back up lights and horn and the horn or the back up lights will come on when I use the switch for the strobes 358286



- RM-690
by:

Does what it's supposed to do. My warning lights do not come on anymore. That being said, it should be included or recommended for the Tekonsha brake controller system. I guess all vehicles don't have that problem, but why take the chance. I have a 2017 Toyota Highlander Hybrid. 578821



- RM-690
by:

Used this in conjunction with a 12V charge line from my Class A motorhome to the battery in my Jeep to provide charge to battery when towing and using BrakeBuddy. Prevents backflow discharge when stopped. Also put in fuse at front of coach and fuse at Jeep battery as protection for 12V system in case of chaffed wire or grounding. 439875


Comments
Towed that Jeep to several places last year. Still works just like its supposed to.
Greg S - 10/09/2018

44451

- RM-690
by:

I wasn't using it for trailering or anything, I was actually wiring up cooling fans on my mustang, worked either way though so I'm happy 863627



- RM-690
by:

I got this to isolate my emergency brake disconnect battery from the main trailer battery. I would have preferred if the included wire crimps were the heat shrink type. Shipping took forever and was not trackable. Otherwise, this was a super easy product to install. Thank you etrailer for making it easy! 853674



- RM-690
by:

Best diode, since radio shack is closed. Unit does get warm, this could concern depending on mounting location. 816774



- RM-690
by:

Didn't know I needed this to wire my 7 pin connector for trailer brakes. My neighbor told me I would need it so I ordered it. It works great. I suggest you mention it when someone orders a 7 pin wiring harness for a newer car. 803523



- RM-690
by:

Greg your company is outstanding. Incredible customer service! 777641



- RM-690
by:

Excellent 749448



- RM-690
by:

Works as described. I used it in the charge line from the motorhome to the towed vehicle battery (2012 CR-V, diode in from charge line, diode out to CR-V battery). 699057



- RM-690
by:

The road master diode worked perfect I used it as a battery isolater between my trailer winch battery and my trailer brake battery so when I would use the electric winch it doesn't drain my trailer brake battery with combination with a isolater switch so long u wire it correctly it works perfect. 698033



- RM-690
by:

Used in a trailer so the break away battery didn’t back feed the dump body battery or drain it. Both charged in series. 692824



- RM-690
by:

As described, it’s a diode. Prevents backwards flow of power. 677150



- RM-690
by:

I have been using these diodes in the charging system on my boat with 2 diesel engines and 90 amp alternators for 2 weeks now and they are currently working as intended. Very fast service. 614440



- RM-690
by:

Product serves my application. Wanted to be sure that the break away emergency battery power on trailer brakes, when activated, would not back feed to my truck and damage factory brake controller. Installed in 7 conductor cable between truck and trailer. Under test it works fine. Hope I never need it on the road. Recommend it for protection from back feed voltage. Could be used in any DC voltage system when the flow of current must be controlled or protected. 611212



- RM-690
by:

Although I did not use it for exactly what it was designed, it worked perfectly Easy to install 609339



- RM-690
by:

One year after install and still working perfectly. 602849



- RM-690
by:

The product was exactly what I needed. 602362



- RM-690
by:

Diode itself seems fine. But the connectors were loose fitting and the sleeve that fits over the wire was either too thin or too soft. As a result, when crimped onto the wire, the wire was still loose and came out with a light tug. Replaced the connectors with better ones. Is now working fine. 599347



- RM-690
by:

All that I expected plus it comes with insulated terminals. 558259



- RM-690
by:

Product was exactly what I needed and fully resolved my problem. Price was in-line with expectations and it was delivered promptly. I couldn't be happier. 518308



- RM-690
by:

Great product very easy to install. 508174



- RM-690
by:

Product was exactly as described and worked well 506471



- RM-690
by:

excellent 503900



- RM-690
by:

Very simple diode that has been working fine for the past year. I used it in my Ford Flex that I flat tow behind my motor home..... it helps to charge the battery while underway, and prevents reverse current flow back to the RV when parked. 494550


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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Jeffrey L
Video by:
Andrew K
Video Edited:
Jacob T
Test Fit:
Randy B
Updated by:
Sarah W
Updated by:
Hannah L

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