99 Corolla stoplight problem

I have a 99 corolla that has a stoplight problem. The left light
isn't working although the bulb is good. I can't do much tracing
but there is no power to the socket. Anyone have any experience
with the wiring? Is there a fuse for each bulb or a wiring diagram
available? Any help will be appreciated.

"mwebsurfer" <mwebsurfer@verizon.net> wrote in message
news:Nvlnf.37077$Y7.5738@trnddc02...[color=blue]
>I have a 99 corolla that has a stoplight problem. The left light
> isn't working although the bulb is good. I can't do much tracing
> but there is no power to the socket. Anyone have any experience
> with the wiring? Is there a fuse for each bulb or a wiring diagram
> available? Any help will be appreciated.[/color]

How do you know that the bulb is good? Did you try a known good bulb, like
from the other side?

How do you know that there is no power to the socket? Did you test with a
ground other than the socket's ground or did you test between the positive
and negative terminals in the socket? If you checked between the positive
and negative terminals in the socket, it is possible that you have no ground
and there is power coming to the socket. The most common reason of rear
light problems is a loose ground somewhere back there. Check all ground
wires to make sure they make good contact with ground.
--
Ray O
correct the return address punctuation to reply

Ray O wrote:[color=blue]
> "mwebsurfer" <mwebsurfer@verizon.net> wrote in message
> news:Nvlnf.37077$Y7.5738@trnddc02...
>[color=green]
>>I have a 99 corolla that has a stoplight problem. The left light
>>isn't working although the bulb is good. I can't do much tracing
>>but there is no power to the socket. Anyone have any experience
>>with the wiring? Is there a fuse for each bulb or a wiring diagram
>>available? Any help will be appreciated.[/color]
>
>
> How do you know that the bulb is good? Did you try a known good bulb, like
> from the other side?
>
> How do you know that there is no power to the socket? Did you test with a
> ground other than the socket's ground or did you test between the positive
> and negative terminals in the socket? If you checked between the positive
> and negative terminals in the socket, it is possible that you have no ground
> and there is power coming to the socket. The most common reason of rear
> light problems is a loose ground somewhere back there. Check all ground
> wires to make sure they make good contact with ground.[/color]
I checked the bulb across the battery with jumpers and it lit.
I checked the socket with a vometer to the chassis ground. No juice.

"mwebsurfer" <mwebsurfer@verizon.net> wrote in message
news:XZJnf.16357$hB6.1848@trnddc05...[color=blue]
> Ray O wrote:[color=green]
>> "mwebsurfer" <mwebsurfer@verizon.net> wrote in message
>> news:Nvlnf.37077$Y7.5738@trnddc02...
>>[color=darkred]
>>>I have a 99 corolla that has a stoplight problem. The left light
>>>isn't working although the bulb is good. I can't do much tracing
>>>but there is no power to the socket. Anyone have any experience
>>>with the wiring? Is there a fuse for each bulb or a wiring diagram
>>>available? Any help will be appreciated.[/color]
>>
>>
>> How do you know that the bulb is good? Did you try a known good bulb,
>> like from the other side?
>>
>> How do you know that there is no power to the socket? Did you test with
>> a ground other than the socket's ground or did you test between the
>> positive and negative terminals in the socket? If you checked between
>> the positive and negative terminals in the socket, it is possible that
>> you have no ground and there is power coming to the socket. The most
>> common reason of rear light problems is a loose ground somewhere back
>> there. Check all ground wires to make sure they make good contact with
>> ground.[/color]
> I checked the bulb across the battery with jumpers and it lit.
> I checked the socket with a vometer to the chassis ground. No juice.[/color]

When I read your original post, I missed the question about whether there is
a fuse for each bulb, and the answer is no - left and right side share one
power source. Since it is a tail light/brake light socket, I'm assuming you
checked both filaments in the bulb and both worked. Assuming that the turn
signal bulb is a separate bulb, then you should only have to trace back to
where the harness splits left and right. If that doesn't work, then wire a
parallel circuit from the right side.
--
Ray O
correct the return address punctuation to reply