Boat Lights Red Green
I've got an old trailer that I bought that the wires on it have been spliced in a number of places but the tail lights work well. So I thought for preventative maintenance, I would replace all of the wiring. I bought a standard 25' of four wire with a flat four wire flat connector. I just noticed that each of the tail lights have 3 wires coming out of them, a red, white and black.I know that the green is the right turn, yellow is the left turn and the brown is the tail.
![Where to place boat lights red green Where to place boat lights red green](https://images-na.ssl-images-amazon.com/images/I/41milqZbAbL.jpg)
![Battery operated boat lights red green Battery operated boat lights red green](https://i.ebayimg.com/images/g/0ewAAOSw0xtcJdaF/s-l300.jpg)
What is the correct way to hook up this up to the red, white and black coming out of the existing lights?Thanks for your help. Re: 3 Wires in Trailer Lights - How to hook upMarlboro, I've got a stupid question for you. In your wiring diagram, it shows the brown wire going down both the driver and passenger side of the trailer. I was just going to continue the wire from the first light across the back of the trailer to the second light. Otherwise I would need an additional brown wire, right?Also, I was going to do the same for the ground wire on the lights. That is run a wire from the ground on the first light over to the second light and then ground both of them near the second light. If I do it that way, I'm going to have to join three of the wires together.
![Green Green](https://www.boat-ed.com/washington/handbook/epub/OPS/images/navigation_lights_night_green.jpg)
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Boat Navigation Lights Red Green
What's the best way to make a good waterproof three wire connection?Thanks again. Yes that wiring will work. For example; if you run your wiring down the right side of your trailer, you can then run your yellow, brown spliced, and white sliced wire across the back rail to your left light and tap in your rear marker lights as well.It will work, but you're better to do it well right now if you rewire. Splice right at the tongue. That way, if you get a chafed wire somewhere, you won't loose all your lights. And an even better practice is to run separate ground wire up to the tail lights instead of relying only on the frame.As for the splices and any connections, solder then heat shrink tubing is the way to go.
Boat Lights Red Green Right Left
It will work, but you're better to do it well right now if you rewire. Splice right at the tongue. That way, if you get a chafed wire somewhere, you won't loose all your lights.
Green Lights For Boats
And an even better practice is to run separate ground wire up to the tail lights instead of relying only on the frame.As for the splices and any connections, solder then heat shrink tubing is the way to go.You can run seperate brown wires down both sides of the trailer, but if any part of the brown 'chaffs' and shorts you will still blow the fuse.and lose all of your running lights. In theory the less the length of the brown wire, the less the chance of having a short.It is true that if you run the brown down both sides.and one side simply has a poor connection.you will keep the one good side lit. That is a good reason to run both sides!Happy boating!