Auto trunk release and cyclops light not working

Tiny
LABMANHNTR
  • MEMBER
  • 2006 DODGE CHARGER
  • 3.5L
  • V6
  • RWD
  • AUTOMATIC
  • 87,000 MILES
The in vehicle auto trunk release switch (nor the key fob) will open the trunk. Key opens trunk - OK Also the cyclops stop light located on the exterior of the trunk is not working. I have read that both problems are usually related to broken wiring within the flexible wiring loom running between the passenger side interior trunk - to the chassis. There is a flexible wiring harness protector covering the wiring. Each end of the protector is fitted with a flexible rubber boot. I have removed both boots and tried to slide the protector each direction to make a visual inspection of the wires. I have been unable to see any breaks or bad insulation, however the protector has no split to remove it entirely for a complete visual inspection. I have not read of or found any fuse for the trunk release / cyclops brake light circuit. Any suggestions?
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Friday, November 29th, 2013 AT 9:39 PM

3 Replies

Tiny
CARADIODOC
  • EXPERT
Sorry that I don't have a wiring diagram to look at, but if both circuits failed at the same time, what they probably have in common is a single ground wire. Are you saying the latch solenoid and the light are on the trunk lid, and not on the main body? If so, then I can see where flexing wires is a good suspect. You should be able to prove that with a test light or voltmeter. Chances are power is getting to each circuit and a test light would show that. The trunk solenoid and the brake light assembly will each have two wires. Back-probe a terminal in one of the connectors while a helper activates that circuit. If the light turns on or the voltmeter shows around 12 volts, the computer circuitry is running those devices, but they can't operate without a ground return path. Try the second terminal if the first one doesn't have voltage.

This will just verify the complicated computer circuits are working and just the ground wire is broken. You may need to talk with a mechanic at the dealership to find out how to get the harness apart.
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Friday, November 29th, 2013 AT 11:51 PM
Tiny
MAXIMILIAM
  • ADMIN
Thank you for your prompt and helpful response. Long story, short - Three broken wires inside the rubber flex cover. Located at passenger side rear chassis deck between body and trunk. Stripped wires, crimped butt connectors, heat shrink, then reinforced with electrical tape. All working fine. *Be sure to connect upper boot cover correctly. If you connect incorrectly - 180 degrees off - causes rubber flex to bend up into the gasket between trunk lid and chassis.

You are correct the trunk latch servo is located within the trunk lid.

My son was able to locate a wiring color code guide for the 2006 Dodge Charger

Hope this report information will be of assistance when this same question is asked again.

Thanks,

Labmanhntr
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Sunday, December 1st, 2013 AT 2:12 AM
Tiny
CARADIODOC
  • EXPERT
Real happy to hear it's solved, but in the future, consider butt connectors a temporary fix. Flexing and moisture are their enemies. The best repair is to push the strands together, solder them, then use the heat-shrink tubing. Anywhere moisture is a concern, use heat-shrink tubing with hot-melt glue inside to seal it. All auto parts stores have it. Thanks for posting the solution.
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Sunday, December 1st, 2013 AT 3:30 AM

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