trailer lighting?? - Page 2 - SailNet Community

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  #11  
Old 11-12-2011
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Take an alligator clip, one of those clips with a long nose on it, and reach inside the trailer connector with a hot wire from a battery and also of course connect the ground. See if things light up. If this works and you have a good ground from vehicle to trailer then consider relays and be sure to fuse the circuits.
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Old 11-12-2011
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It may not hurt to check that the bulbs are "in place" and haven't rattled out of their sockets due to shipping, handeling etc...
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What you need to do is test the continuity of the ground. You need a multimeter for this, on ohms range.

Check that you have around 0 ohms (might be 1 ohm, no higher) between the vehicle ground and that pin on the car's 4 way connector.

Then check between the trailer's ground pin and anywhere on the trailer chassis where you can touch exposed metal.

There should be a wire from the trailer's ground pin, to the trailer's chassis. If this is broken (can be broken internally so it looks OK) or has a bad connection this will stop all the lights working.

These things age quickly from regular dipping in water!

There's only so far you can go with a test light. A multimeter is a much more powerful tool.
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Quote:
Originally Posted by MarkSF View Post
What you need to do is test the continuity of the ground. You need a multimeter for this, on ohms range.

Check that you have around 0 ohms (might be 1 ohm, no higher) between the vehicle ground and that pin on the car's 4 way connector.

There's only so far you can go with a test light. A multimeter is a much more powerful tool.
Nah, Use a piece of wire with two bare ends and look for sparks. (just kidding)
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Sparks

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Nah, Use a piece of wire with two bare ends and look for sparks. (just kidding)
In reality, I have done this, but the problem is the way I do it, I usually blow a fuse.
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Old 11-13-2011
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well, thanks so much for the suggestions. i couldnt make anything happen, so i purchased the magnetic temp lights, which dont need the ground. plugged them in and still nothing. so, guess the tester was lying. so here i sit on land missing my trip and ready, somewhat, to begin tomorrow on car plug issue. thanks again.
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