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Why will your boat trailer tail lights work but not your turn signal or brake lights when hooked up to your 1997 Cherokee when you know for sure the problem is not in tne trailer wiring?
Davidjazz
1) I've learned more than anything to unhook the lights before backing the trailer into the water. Nothing like a hot bulb meeting cold water.....but if you believe the advertisements, boat trailer lights should be waterproof and not let water into the space where the bulb is. RIGHT !!!!
2) Now, the other issue that has to do adequate grounding usually needing more just the hitch ball. - inadequate grounding is the number one cause of trailer light problems and cause all kinds of strange behavior (work sometimes, or only when headlights are off, or both sides flash with either blinker, etc.) - try a better ground than the tongue and checking for any corrosion at any of the individual light ground connections (which tend to corrode over time).
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∙ 16y ago
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Im not sure i under stand your guestion, but it sounds like the trailer wireing is wrong. The wires on the trailer should be wired like this. White is ground, Green is right turning signal,Yellow is left turning signal,Brown is running lights, Black is brake lights. I hope this helps you.
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Chances are very good that you have a bad ground wire on your trailer or on the connector. Check the connector for rust or rot, clean the pins and use some grease to prevent future problems. If the problem isn't at the connector, you may have a bad ground on the trailer which could be anything from an ungrounded light socket to a bad ground wire. Hope this helps
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Trailer Lights Work on Other Vehicles but Not MineIF the lights [tail, turn, and brake] are working on your vehicle, AND the trailer lights will work on some other vehicle, that confirms:That the problem is NOT in your vehicle's wiring system.That the problem is either in the trailer wiring, OR is caused by the IMPROPER connection of the connector plug wires to the wiring of your vehicle.It is critical that the connector plugs [on the vehicle and the trailer] are properly connected to the correct wires.The fact that NONE of the lights work when connected to your truck suggests that the defect is related to the GROUND wireas that is the only wire common to all the different light circuits.
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