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Old 04-03-2024, 10:07 PM   #1
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Drivers side tail light brighter than passenger

Ok, strange occurrence has happened. I noticed that my cable from the truck to the trailer had been bitten by an animal. Either a bear or a cougar I think! Iím in lower BC and they have been seen around. I repaired the damage, white line was broken. Red and black were pinched and needed repaired as well. I hooked it to the truck and checked the lights and the drivers side tail light is now brighter than the passenger. And the indicator is dim when it flashes. It is dim but does flash.

What could the issue be? The only wires that have been changed are the ones in the connection cable.

Would replacing the truck cable fix the issue?
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Old 04-04-2024, 01:36 AM   #2
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Look at damage between the yellow and brown wires. They are the left turn and tail light wires. If making contact, what you have happening can happen.
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Old 04-04-2024, 05:46 AM   #3
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Also look for further passible damage that was missed, and look at the box on the trailer to make sure the connections are good. Possible the animal could have pulled on the pigtail?

Don't know how you made the repair but recheck it.

I am thinking there was missed tooth penetration.

If all else fails replace the pigtail to the trailer. The area the repair was made can be subject water and wear down the line.

Good Luck !!! It is always something.

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Old 04-04-2024, 08:28 AM   #4
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Bears? Cougars? More likely small rodents.

Complete umbilical cords are available and inexpensive and solve all problems. Yeah, ya gotta crawl under and access the junction box under the trailer. Replace the wires one at a time matching the color. Plug-n-play.

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Old 04-04-2024, 08:54 AM   #5
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Quote:
Originally Posted by NickHeaps819 View Post
Ok, strange occurrence has happened. I noticed that my cable from the truck to the trailer had been bitten by an animal. Either a bear or a cougar I think! Iím in lower BC and they have been seen around. I repaired the damage, white line was broken. Red and black were pinched and needed repaired as well. I hooked it to the truck and checked the lights and the drivers side tail light is now brighter than the passenger. And the indicator is dim when it flashes. It is dim but does flash.

What could the issue be? The only wires that have been changed are the ones in the connection cable.

Would replacing the truck cable fix the issue?
Your report that your drivers side tail light is brighter than the passenger, and the indicator is dim when it flashes certainly sounds like the yellow and brown wires are interchanged feeding the actual driver side trailer tail lamp. See attached diagram.
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Old 04-04-2024, 01:12 PM   #6
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If the 1157/2057 type bayonet bulb was removed from the socket and FORCED into the socket the wrong way, you would have this symptom. The two bayonet pins on the sides of the brass shell are NOT at the same distance from the base (to prevent this), but a strong hand can still force the bulb in backwards.
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Old 04-04-2024, 01:17 PM   #7
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Bulb in backwards

Quote:
Originally Posted by NickHeaps819 View Post
Ok, strange occurrence has happened. I noticed that my cable from the truck to the trailer had been bitten by an animal. Either a bear or a cougar I think! Iím in lower BC and they have been seen around. I repaired the damage, white line was broken. Red and black were pinched and needed repaired as well. I hooked it to the truck and checked the lights and the drivers side tail light is now brighter than the passenger. And the indicator is dim when it flashes. It is dim but does flash.

What could the issue be? The only wires that have been changed are the ones in the connection cable.

Would replacing the truck cable fix the issue?
If the bulb/lamp is the 1157/2057 type with the bayonet base and two contacts on the bottom, AND the bulb is FORCED into the socket the wrong way, you will have exactly this symptom.

The two bayonet pins are offset, not the same distance from the base, but I have often seen the bulb forced into the socket the wrong way by people who don't realize that.

Just take the bulb out and put it in the right way.

(Let me guess--when you first noticed the light wasn't working, you replaced the bulb, right?)
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Old 04-04-2024, 01:19 PM   #8
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Quote:
Originally Posted by Larry-NC View Post
If the 1157/2057 type bayonet bulb was removed from the socket and FORCED into the socket the wrong way, you would have this symptom. The two bayonet pins on the sides of the brass shell are NOT at the same distance from the base (to prevent this), but a strong hand can still force the bulb in backwards.
Even a better possibility.
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