Diodes permit electrical current to flow in only one direction - from the motorhome to the car - prevents electrical feedback and the damage it can cause to the towed car's electrical components.
Features:
Note: 4 Diodes are required for most applications (1 left turn/brake, 1 right turn/brake, 2 for tail lights - each side).
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Average Customer Rating: 4.9 out of 5 stars (119 Customer Reviews)
Diodes permit electrical current to flow in only one direction - from the motorhome to the car - prevents electrical feedback and the damage it can cause to the towed car's electrical components.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! 524458
Jon l - 06/20/2019Ordered a diode for a project on my RV and it worked out fine. I just wish the price was much cheaper for such a small part. 402096
Jim - 07/06/2018This handy item allowed me to wire up my rear bumper flush mount lights to power on with my reverse lights and also power on from a switch. Very handy! 768435
Easy to install. Took awhile for me to understand installation but working well a year later 751598
I am in awe how quickly this order was processed and delivered. Considering it had to clear Canadian customs and I ordered on a Friday , it was in my hands on Wednesday. Megan was very helpful on the phone in locating the correct parts ,processing the order and following up with tracking info. I had also chat online prior to placing the order with Mackenzie who answered all questions effectively. Combining all this with the fact etrailer has very detailed instructions with drawings on the installation and I am beyond impressed. It isn’t often we see customer service on this caliber today. As a consumer I will definitely be using them again! Oh yeah and the product needed was in stock whereas when I ordered from a well known online site (A...n) in September and told ETA would be Nov/Dec they couldn’t even deliver in that timeline? 729438
I bought all Roadmaster parts for my tow car. ALL worked as advertised(GREAT) I thought about a 4 star because slow delivery but you all were helpful. 621601
So far so good 614214
Good product works well one leg to camper batttery one leg from truck to camper batteries 610816
Diode was delivered promptly and was a good transaction, Very pleased with the service 606072
Used on spray equipment wiring to run a foamer with an on/off/on (L-R) switch. Had to eliminate a feedback loop with a high amp diode to run an actuator, this item fit the bill very nicely. 576776
Fits perfectly and works great without overheating. 571395
I bought these electrical products for my brother‘s Fiat that he tows behind his moterhome for extra parts haven’t had to use them yet but it’s good to know that etrailer Corp. has the parts thanks George J. 570830
glad we could find it here. 554841
Excellent service. 521452
I was amazed to learn that similar to plumbing, you can put a one way valve in a 12 volt wire as well. One of my batteries was not being charged when our RV was plugged in and to make sure I did not run down my engine battery I installed this diode. Simple and came with connections ready to be hooked up. Arrived pretty quickly too. That you Christina J for one on one over the phone help. 500181
Just installed it. I think it’s working. I like that the spade terminals are included. 493819
Works great!!! 493044
has worked great. 478527
Put it in a snowmobile trailer with a battery and hook the clearance light wire with the one way diode & then to the interior lights so if someone leaves the lights on in the trailer we can still start the pickup when we get back from a 3 day ride 477933
Nice item, problem solved with my auxiliary lights on the rear of my pickup, lights now work off two switches and no feed back either source. Can put truck in reverse and it doesn't feed power back to switch or i can manually turn them on from the switch and no back feed to my reverse lights. Was nice that it came with butt connectors even tho i have all the electrical connectors, didn't have to search for any. Liked how you can put two power source in and it goes out to one and didn't have to buy two diodes one for each side like traditional diodes. All around nice product and well made. Sorry didn't have a pic to post with it didn't feel like pulling taillight back out. 472833
This is a little premature to give a product rating. I will say that the diods iordered arrived sooner than expected. After reviewing the options for wiring a vehicle to be towed behind a mtrhome this is the way to process. Thank you, Jim 464083
Just what I was looking for small and compact also 463406
Bought this so I could install backup lights on my trailer and also be able to use them as loading light. This has worked out great. I have also purchased several other items from etrailer and have been happy with all of them. 454001
JAMES S - 11/21/2018Used diode in wiring dingy battery to RV to keep it charged while towing - worked great. 450358
Works just like I expected it to. 442633
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