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-   -   Headlight wiring problems? (https://www.saturnforum.com/forum/saturn-3-door-coupes-28/headlight-wiring-problems-4530/)

TCCustoms 05-16-2010 02:26 PM

Headlight wiring problems?
 
3 Attachment(s)
ok, im hoping i can upload some pics but there may be restrictions on that so if the pics dont show in this messege be patient please, lol. SOOO, heres the problem! Daytime running lights run fine, turns and corners work fine when on the corner lights, When on headlights or Lowbeams the daytime lights dont shut off or the brights come on but dim so ALL 4 LIGHTS are on with lowbeams them when i go to HIGHBEAMS the lows stay on but everything on the passenger side is dim and i know that there is always 12V at the headlight bulb and then when the switch is turned to lowbeams you are applying the ground which is opposite to me so i dont know where to begin or look to fix this problem....Please, any ideas? I have HID's i want to put in but becuz of the voltage drop and erratic things they do i dont want to put them in yet. I do have a upgraded wiring harness with relays used on another car but this will only allow me to fix the low beam if i could figure out the wiring but when i switch to high beams they will be worthless so i need your help. Sorry for the long story just tryin to inform you of what i knowhttp://www.saturnfans.com/forums/images/smilies/yes.gif

Also, when i unplug either of the high beams when its on low beams i loose the driver side low beam.....WEIRD!

From left to right its....
LEFT PIC-Corners, fogs, and daytimes
CENTER PIC-Low beams and fogs
RIGHT PIC-High beams

aminal 05-16-2010 11:05 PM

dont use cheap bulbs, and you were unplugging the daytime running light, not the low beam, they really are two different things.
get some decent bulbs and clean your connections, check and recheck your fuses.

had the exact same thing happen on a honda i used to have, no more cheap bulbs and plenty of time to clean connections.

TCCustoms 05-17-2010 06:33 AM

all are sylvannia bulbs....contacts were good on all the bulbs and connectors but the fuse box has some corrosion where the fuses meet the circuit board down inside but not sure how to get it apart to clean it

derf 05-17-2010 06:05 PM

I had similar issues on a 1980 ford grenada but with the rear lights and much less complicated of course. turned out to be a single bad ground inside one of the sockets for a single bulb. Depending how these things are wired, a missing ground combined with (in that case) multi filament bulbs had current running down all kinds of paths it was never intended to.

Hit the brake pedal---left brake light on but right running light went off, etc...

+1 for clean connections at bulbs

uncljohn 05-18-2010 02:36 AM

Another thing to look at although I have never had this problem where it affected head lights but-
as connectors are affected by corrosion it has been possible to connect those connectors to tail, parking and brake lights backwords. They are kinda funky anyway so once corrosion sets in, it is easier than it looks. When this happens the wiring involved is not happy carring different current loads that it was designed for and you get really strange light problems similar to what you are describing.
IF corrosion is a potential problem and/or some one has been already trying to install after market lights requiring wiring harnes modifications, that is cut and splice I would carefully check light connections to insure that they are plugged in correctly and wiring repairs or modification that they have been done so there is no loose wires, or wires that should not touch each other, touching. This is an extremely hard problem to solve and I have seen problems with lights in one end of the car affect things at the other end. If a trailer hitch has been installed and trailer wiring harness cobbed in some of those are really poorly done. Check that out too.
I am sure running lights can cause some wierd symptoms too if something like this has happened.

TCCustoms 05-18-2010 12:15 PM

ya, i think i may end up checking out the buss connector by the headlights and check that and see if anything happens and maybe even cut it off and make them all in one if i find that to be the problem


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