Brake lights work fine, when neither the parking lights or headlights are
on.


When either the parking lights or headlights are turned on, the left
brakelight goes off !!!

I have put brand new bulbs in left/right/upper-center brakelight housings.

Again, the brake lights operate ok, as long as I don't have the headlights
or the parking lights on. The minute I turn either of them on, the LEFT
brake light will not work !!! This is truly weird.

Can anyone help me ???

Thanks !!

--James--

 

Hi James,
Double check that socket for a good ground. Play with your turn
signal lever, and see if you can make the left brake work or by
switching to a right turn, which should shut off that light. Telling you
it's in the switch, probably after a trailer short melt down.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

James wrote:
>
> Brake lights work fine, when neither the parking lights or headlights are
> on.
>
> When either the parking lights or headlights are turned on, the left
> brakelight goes off !!!
>
> I have put brand new bulbs in left/right/upper-center brakelight housings.
>
> Again, the brake lights operate ok, as long as I don't have the headlights
> or the parking lights on. The minute I turn either of them on, the LEFT
> brake light will not work !!! This is truly weird.
>
> Can anyone help me ???
>
> Thanks !!
>
> --James--

 

Hi James,
Double check that socket for a good ground. Play with your turn
signal lever, and see if you can make the left brake work or by
switching to a right turn, which should shut off that light. Telling you
it's in the switch, probably after a trailer short melt down.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

James wrote:
>
> Brake lights work fine, when neither the parking lights or headlights are
> on.
>
> When either the parking lights or headlights are turned on, the left
> brakelight goes off !!!
>
> I have put brand new bulbs in left/right/upper-center brakelight housings.
>
> Again, the brake lights operate ok, as long as I don't have the headlights
> or the parking lights on. The minute I turn either of them on, the LEFT
> brake light will not work !!! This is truly weird.
>
> Can anyone help me ???
>
> Thanks !!
>
> --James--

 

Hi James,
Double check that socket for a good ground. Play with your turn
signal lever, and see if you can make the left brake work or by
switching to a right turn, which should shut off that light. Telling you
it's in the switch, probably after a trailer short melt down.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

James wrote:
>
> Brake lights work fine, when neither the parking lights or headlights are
> on.
>
> When either the parking lights or headlights are turned on, the left
> brakelight goes off !!!
>
> I have put brand new bulbs in left/right/upper-center brakelight housings.
>
> Again, the brake lights operate ok, as long as I don't have the headlights
> or the parking lights on. The minute I turn either of them on, the LEFT
> brake light will not work !!! This is truly weird.
>
> Can anyone help me ???
>
> Thanks !!
>
> --James--

 

Hi James,
Double check that socket for a good ground. Play with your turn
signal lever, and see if you can make the left brake work or by
switching to a right turn, which should shut off that light. Telling you
it's in the switch, probably after a trailer short melt down.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

James wrote:
>
> Brake lights work fine, when neither the parking lights or headlights are
> on.
>
> When either the parking lights or headlights are turned on, the left
> brakelight goes off !!!
>
> I have put brand new bulbs in left/right/upper-center brakelight housings.
>
> Again, the brake lights operate ok, as long as I don't have the headlights
> or the parking lights on. The minute I turn either of them on, the LEFT
> brake light will not work !!! This is truly weird.
>
> Can anyone help me ???
>
> Thanks !!
>
> --James--

 

The left brake light has a broken filiment. Let me restate that, the left
brake light is getting its ground throught the left side running light. When
the left side running lightis ON, there is no ground potential, and the
brake light stops working.

Replace the offending bulb.

Having said that, the ground for the lights in Jeeps is known to not be very
good, but your 2000 should not have trouble yet. The fix is to completely
remove the light assembly - you may as well take them both off and do the
same thing - and identify the screw that physically grounds the asembly to
the fender, and clean the contact points with very fine sand paper or steel
wool. A good strategy would be to take a pigtail lead from the ground screw
to another point inside the fender, this would require drilling another hole
that would not be visible from the outside. I would use a star washer that
could punch through the paint ...




"James" <jnipperxxx@nospamfdn.com> wrote in message
news:kKadnfOm256_nvbfRVn-3A@comcast.com...
>
>
> Brake lights work fine, when neither the parking lights or headlights are
> on.
>
>
> When either the parking lights or headlights are turned on, the left
> brakelight goes off !!!
>
> I have put brand new bulbs in left/right/upper-center brakelight housings.
>
> Again, the brake lights operate ok, as long as I don't have the headlights
> or the parking lights on. The minute I turn either of them on, the LEFT
> brake light will not work !!! This is truly weird.
>
> Can anyone help me ???
>
> Thanks !!
>
> --James--
>
>

 

The left brake light has a broken filiment. Let me restate that, the left
brake light is getting its ground throught the left side running light. When
the left side running lightis ON, there is no ground potential, and the
brake light stops working.

Replace the offending bulb.

Having said that, the ground for the lights in Jeeps is known to not be very
good, but your 2000 should not have trouble yet. The fix is to completely
remove the light assembly - you may as well take them both off and do the
same thing - and identify the screw that physically grounds the asembly to
the fender, and clean the contact points with very fine sand paper or steel
wool. A good strategy would be to take a pigtail lead from the ground screw
to another point inside the fender, this would require drilling another hole
that would not be visible from the outside. I would use a star washer that
could punch through the paint ...




"James" <jnipperxxx@nospamfdn.com> wrote in message
news:kKadnfOm256_nvbfRVn-3A@comcast.com...
>
>
> Brake lights work fine, when neither the parking lights or headlights are
> on.
>
>
> When either the parking lights or headlights are turned on, the left
> brakelight goes off !!!
>
> I have put brand new bulbs in left/right/upper-center brakelight housings.
>
> Again, the brake lights operate ok, as long as I don't have the headlights
> or the parking lights on. The minute I turn either of them on, the LEFT
> brake light will not work !!! This is truly weird.
>
> Can anyone help me ???
>
> Thanks !!
>
> --James--
>
>

 

The left brake light has a broken filiment. Let me restate that, the left
brake light is getting its ground throught the left side running light. When
the left side running lightis ON, there is no ground potential, and the
brake light stops working.

Replace the offending bulb.

Having said that, the ground for the lights in Jeeps is known to not be very
good, but your 2000 should not have trouble yet. The fix is to completely
remove the light assembly - you may as well take them both off and do the
same thing - and identify the screw that physically grounds the asembly to
the fender, and clean the contact points with very fine sand paper or steel
wool. A good strategy would be to take a pigtail lead from the ground screw
to another point inside the fender, this would require drilling another hole
that would not be visible from the outside. I would use a star washer that
could punch through the paint ...




"James" <jnipperxxx@nospamfdn.com> wrote in message
news:kKadnfOm256_nvbfRVn-3A@comcast.com...
>
>
> Brake lights work fine, when neither the parking lights or headlights are
> on.
>
>
> When either the parking lights or headlights are turned on, the left
> brakelight goes off !!!
>
> I have put brand new bulbs in left/right/upper-center brakelight housings.
>
> Again, the brake lights operate ok, as long as I don't have the headlights
> or the parking lights on. The minute I turn either of them on, the LEFT
> brake light will not work !!! This is truly weird.
>
> Can anyone help me ???
>
> Thanks !!
>
> --James--
>
>

 

The left brake light has a broken filiment. Let me restate that, the left
brake light is getting its ground throught the left side running light. When
the left side running lightis ON, there is no ground potential, and the
brake light stops working.

Replace the offending bulb.

Having said that, the ground for the lights in Jeeps is known to not be very
good, but your 2000 should not have trouble yet. The fix is to completely
remove the light assembly - you may as well take them both off and do the
same thing - and identify the screw that physically grounds the asembly to
the fender, and clean the contact points with very fine sand paper or steel
wool. A good strategy would be to take a pigtail lead from the ground screw
to another point inside the fender, this would require drilling another hole
that would not be visible from the outside. I would use a star washer that
could punch through the paint ...




"James" <jnipperxxx@nospamfdn.com> wrote in message
news:kKadnfOm256_nvbfRVn-3A@comcast.com...
>
>
> Brake lights work fine, when neither the parking lights or headlights are
> on.
>
>
> When either the parking lights or headlights are turned on, the left
> brakelight goes off !!!
>
> I have put brand new bulbs in left/right/upper-center brakelight housings.
>
> Again, the brake lights operate ok, as long as I don't have the headlights
> or the parking lights on. The minute I turn either of them on, the LEFT
> brake light will not work !!! This is truly weird.
>
> Can anyone help me ???
>
> Thanks !!
>
> --James--
>
>

 

Jeff, thanks for the info, and I will work on the ground situation.

But, as I said in my original post, I have put a new bulb in the left brake
light, so I doubt it is a bad one.


--James--