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Old 05-13-2010, 11:21 AM   #1
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Right turn signal blinks fast + dim + reverse light blinks too!

When my headlights aren't on and use the left/right turn signal, they flash like normal.

However, when I turn on the headlights or have the car in reverse and use the right turn signal, the rear blinker light blinks fast, but it's also dim looking and at the same time, the white reverse lights (both left and right) blink! Has anyone run into this problem?


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Old 05-13-2010, 11:57 AM   #2
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Quote:
Originally Posted by Rise View Post
When my headlights aren't on and use the left/right turn signal, they flash like normal.

However, when I turn on the headlights or have the car in reverse and use the right turn signal, the rear blinker light blinks fast, but it's also dim looking and at the same time, the white reverse lights (both left and right) blink! Has anyone run into this problem?

Current is leaking to the reverse lights and appears to be coming from the park/turn signal lights. Could be a problem in the wire harness socket connection or at the light itself or wires have chaffed bare somewhere, allowing the transfer of current.
Both reverse lights will come on because they have common wiring between them.
I suggest removing the lens from your right rear light and see what's going on there. To look at the socket, remove the light assembly entirely. May be difficult as there is a mess of vapour control stuff (gas tank associated) in that area. May need to get at it from underneath by pulling the horizontal flap down (held in by a plastic push connector). Lots of dust there most likely, a quick spray with a garden hose will wash most of it down.

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Old 05-13-2010, 12:20 PM   #3
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x2 Not going to get a better answer than that!
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Old 05-13-2010, 05:40 PM   #4
Knows a couple things...

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My guess is that there is probably a grounding issue, either a missing ground, a weak ground, or an intermittent ground. When there is a grounding problem, the electrical system will use whatever ground it can find which is often on the other side of light bulbs... it is called scavenging when a circuit gets its ground in an unexpected location that can cause strange issues like you're having.

I would inspect all your light sockets for how well they are grounded to the tub, especially in the rear. The bulb sockets receive their grounds through the three tail light enclosure screws that hold it to the tub, make sure they are providing a good ground. In fact, that ground is often screwed up by having mounted those aluminum tail light guards which can cause very hard to diagnose electrical issues.
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Old 05-13-2010, 07:21 PM   #5
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Mine was doing that and I took the light cover off and tightened the bolts to make a better ground connection and I have had no problems since.
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Old 05-18-2010, 06:43 PM   #6
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Bingo! It was a grounding issue. I removed the light cover and tightened down the 3 bolts that hold the housing to the body of the Jeep (I bought the tail light protector and they gave me 3 new bolts, and they all had a piece of rubber in between the head of the bolt and the lock washer. I didn't tighten it down enough, so the rubber insulated the ground). Good to go!

Quote:
Originally Posted by Jerry Bransford View Post
My guess is that there is probably a grounding issue, either a missing ground, a weak ground, or an intermittent ground. When there is a grounding problem, the electrical system will use whatever ground it can find which is often on the other side of light bulbs... it is called scavenging when a circuit gets its ground in an unexpected location that can cause strange issues like you're having.

I would inspect all your light sockets for how well they are grounded to the tub, especially in the rear. The bulb sockets receive their grounds through the three tail light enclosure screws that hold it to the tub, make sure they are providing a good ground. In fact, that ground is often screwed up by having mounted those aluminum tail light guards which can cause very hard to diagnose electrical issues.
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Old 09-27-2013, 07:04 AM   #7
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Hats off to you gents,
You guys saved me some time and money, thanks for your posts...
My 03 Rubicon was doing the same as Rise jeep except on the left side.
Tighten the ground on the left rear tail light and good to go.

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