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Archive for the ‘Fifth Wheel/Travel Trailers’ Category

Always check your travel trailer lights before you hit the road. If they don’t work, one possible cause is dirt or oxidation on the umbilical cord plug and/or receptacle contact points.

Make it a habit to clean the contacts with a wire brush or sandpaper. A Dremel tool with right bit will make the job easier (be sure the lights are off when you do this, otherwise it could blow a fuse).

Scrape off dirt and corrosion in the contact holes with an ice pick, rat-tail file or small piece of sandpaper rolled around a toothpick Then, dab a little grease on the prongs, push the connector together.

A little petroleum jelly or light waterproof grease spread on the surfaces will act as a barrier against air and moisture, retard oxidation and keep the lights operating longer.

Soldering all wire splices will help prevent problems with loose connections. Wrapping the splices tightly with electrical tape or heat-shrink tubing will seal out dirt and eliminate shorts.

To keep dirt from getting into the plug between uses slip a small plastic bag over the plug and secure it with a rubber band or tape.

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Imported and some domestic tow vehicles use international lighting in which the turn signal lights are wired separate from the brake lights. Generally an amber lens is used for turn signal lights while standard red lens are used for stop lights.

The lighting system for most American made vehicles combines the turn signals and brake lights into one wire instead of two, and has no amber lenses.

If the tow vehicle has an international system, the two separate wires for turn signals and brake lights on the tow vehicle must be combined into one for the travel trailer’s lighting system to work properly. To do this, a converter is necessary.

The converter is a circuit board built into a separate weather proof box or built into a tow vehicle plug connector.

Three or four wires coming from the tow vehicle… left and right turn, and brake wires… go into the converter and two come out. The two wires coming out are connected to the left and right turn connectors in the trailer-plug receptacle.

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