2001 CARAVAN headlight issues

Intermittent headlight issues.
Running light operates on left side only, when start vehicle and switch
on full headlights, right side light on alone. Replaced both lamps,
then switched sides same problem. Some days all works properly and then
back to original problem. There is NOT a fuse or relay that I can see
designated to the Headlights. This started with the headlight warning
light coming on , it disappeared after I replaced what I thought was a
faulty lamp, but the problems persist. I'm using the #9007 replacement
bulb as recomended. Any help would be much appreciated.

Bill wrote:

> Intermittent headlight issues.
> Running light operates on left side only, when start vehicle and switch
> on full headlights, right side light on alone. Replaced both lamps,
> then switched sides same problem. Some days all works properly and then
> back to original problem. There is NOT a fuse or relay that I can see
> designated to the Headlights. This started with the headlight warning
> light coming on , it disappeared after I replaced what I thought was a
> faulty lamp, but the problems persist. I'm using the #9007 replacement
> bulb as recomended. Any help would be much appreciated.
>

Unless someone here knows of a common failure point in the system, the
best advice would be to get some accurate vehicle-specific schematics
(from the FSM or www.alldata) and break out Mr. Multimeter and start
tracing voltage. If you don't have the skills then find or pay someone
who does.

Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my
address with the letter 'x')

Bill Putney wrote:

> Bill wrote:
>
>> Intermittent headlight issues.
>> Running light operates on left side only, when start vehicle and switch
>> on full headlights, right side light on alone. Replaced both lamps,
>> then switched sides same problem. Some days all works properly and then
>> back to original problem. There is NOT a fuse or relay that I can see
>> designated to the Headlights. This started with the headlight warning
>> light coming on , it disappeared after I replaced what I thought was a
>> faulty lamp, but the problems persist. I'm using the #9007 replacement
>> bulb as recomended. Any help would be much appreciated.
>>
>
> Unless someone here knows of a common failure point in the system, the
> best advice would be to get some accurate vehicle-specific schematics
> (from the FSM or www.alldata) and break out Mr. Multimeter and start
> tracing voltage. If you don't have the skills then find or pay someone
> who does.
>
> Bill Putney
> (To reply by e-mail, replace the last letter of the alphabet in my
> address with the letter 'x')

Also, not uncommon for this type of problem to be caused by corroded
connectors in the harness - including (especially?) the connectors that
plug onto the bulbs themselves. Your statement that "This started with
the headlight warning light coming on, it disappeared after I replaced
what I thought was a faulty lamp, but the problems persist" supports
that possibility.

Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my
address with the letter 'x')

--

"Bill" > wrote in message
ups.com...
> Intermittent headlight issues.
> Running light operates on left side only, when start vehicle and switch
> on full headlights, right side light on alone. Replaced both lamps,
> then switched sides same problem. Some days all works properly and then
> back to original problem. There is NOT a fuse or relay that I can see
> designated to the Headlights. This started with the headlight warning
> light coming on , it disappeared after I replaced what I thought was a
> faulty lamp, but the problems persist. I'm using the #9007 replacement
> bulb as recomended. Any help would be much appreciated.
>
Bill your probably gonna have to have someone with a scanner check all the
modules for fault codes. If faults are found it will be easier to start a
diagnostic test.
In the mean time check the harness that is directly under the battery for
corrosion.

Glenn Beasley
Chrysler Tech