Roadmaster690 Single Park Light Diode

It does exactly what it's supposed to to do. It fixed my problem.

Easy install , just put it inline on the trailer to prevent back feed voltage from my Lithium trailer battery to my wet cell truck battery, it blocks any potential problems 😎

I needed this to run a charge wire from motor home to towed vehicle. The size wasn’t clear to me when I ordered it but it’s quite small with d/f tape so I was able to attach it to the side of the fuse box under the hood, since it’s right next to the battery. After testing power from both sides, it seems to be working perfectly.

Added additional backup lights to my Wrangler JLUR. I wanted to be able to turn them on with an auxiliary switch so I added 2 of these - 1 on the reverse light line and the other on the switch line. Having the connectors and adhesive makes these super simple to use and mount. Also having the In and Out labeled makes it easy enough for anyone to understand.

These work great, I added aftermarket DRLs, courtesy lights and cab lights on my 1995 Dodge Ram 1500 and used 5 of these to accomplish the correct look. When I open my door the courtesy lights, cab lights, reverse lights and marker lights all come on with no back feeding to the other lights on the same circuit.

Can’t say good or bad. Just have to hope it works properly.

Very straight-forward use case. Needed my brake controller not to feed back into my brake circuit. It does exactly that. Seems to be built well and weather-sealed.

I am using this on an old work truck that did not have DRL's and with me being a big fan of having them I decided this was the best way to about making them work as I expected. With a step down converter I now have 9 V with the headlights on during the day and full voltage at night. This way my costly headlight bulbs last a nice long time and no back feed to the tail or marker lights.

Recreational towing circuitery fixed.

good

good

did the job