Electrical cable issues

Putting the above suggestions in order might make your search easier. First buy a simple "trailer light tester" and a 12/6volt test light. They typically cost about $5 to $10 dollars apiece in almost any parts store. NAPA is nationwide and carries them. Most typically MoHos have one of three outlets prewired, a four, six or seven conductor outlet. Buy the trailer light test that fits your rig.

Plug the tester in and have someone operate the lights, have them turn on the parking lights, the appropriate light should illuminate on the test plug. Have the headlights turned on, the test plug light should remain on. If the light comes on, have your helper turn the headlights completely off.

Now have your helper apply the brakes, "Two" lights should light up. If they do, have your helper turn on first one directional flasher and then the other.

If all works, you now know the wiring in your rig is working correctly and now you can connect the umbilical cord and retest.

If all works, you now know the problem is in the towed vehicle's wiring. If the test plug lights fail to come on when the test plug is connected directly to the RV's outlet, check fuses first. The chassis manufacturer should tell you where the correct fuses are and using a 12 volt test light check the fuses.

If no blown fuses are found, carefully disassemble the outlet, being careful not to drop any of the set screws, they don't sell spares.

If any of this confuses you, find an auto electrician to check out your rig.

The correct color code for wiring tail and brake lights is, White = ground, Brown = taillights, Yellow = left turn signal and Green = right turn signal. This is the STANDARD color code, any mods should be corrected to make maintenance and repair easier.

Black is not chassis ground in trailer light cables or connectors.

The other wires are used for other functions not mentioned in your post.

For the layout and colors code for all typical connectors go to the following link;

LINK

On edit I found that I forgot what to do if the umbilical cable fails, if it has removable connectors disassemble the connector and check continuity, Oh Oh, now you need either some long test leads to connect to the battery(or any 12 vdc point or a VOM or DMM with a continuity or resistance scale.

fcooper wrote:
Is your electrical cable a Blue Ox 6-wire Coiled Electrical Cable?

If yes, I, and several others, have found loose screw connectors inside the cable ends. There is a small set screw to remove and then the cable end cover will slide back allowing access to the screws making the electrical connections.

Fred

I had the exact problem too! Bought a new electrical cable and kept blowing fuses in the motorhome (brake light fuse).

I opened the cable end and a little screw fell out.

MM.

Most MHs have fuses for the trailer hitch connector. Maybe someone can chime in on where they are located in your Safari. If you are going to own one of these beasts, you do need to become proficient in the use of a simple 12V light probe and an inexpensive multi-meter so you can check out the many electrical problems you will experience as time rolls by. We also carry a simple tester for our hitch wiring. That one is for a four pin plug but they make them for all hitch connectors.

Is your electrical cable a Blue Ox 6-wire Coiled Electrical Cable?

If yes, I, and several others, have found loose screw connectors inside the cable ends. There is a small set screw to remove and then the cable end cover will slide back allowing access to the screws making the electrical connections.

Fred

Suggest you get an electrical person to help you.

Do you have (and know how to use) a 12 volt test light? If it lights when connected from one vehicle frame to the other, you have an open ground. (lights must be on for this test)

On the toad side plug there should be a black wire that is grounded to the frame of the toad. The only lights that should be working on the toad are the parking lights and brake lights at the rear tail lights. Head lights should not work when toad is being towed.

Where do I begin to look for a ground?

We had that happen when the wires in the plug got pushed in a touched each other causing a fuse to blow. Had to fix the plug and replace the fuse.

Umbilical cord?? Check the ground connections.