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#1037601 - 04/11/16 10:15 PM High Beams gone crazy!!  
Joined: Jan 2016
Posts: 20
MOJOMUNKI Offline
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MOJOMUNKI  Offline
Junior Member

Joined: Jan 2016
Posts: 20
north bay, ON
Hoping someone can shed some light on a strange problem im having. Was coming home the other night and turned on the high beams. They worked fine for about 30 seconds then started to flash on and off. I turned the low beams back on till I got home and they work fine. Once home I tried the high beams and same issue they work fine for about 30 seconds then start to flash. All four headlights go on and off as well as the highbeam indicator light. Tail lights are normal while this is happening. Any help would be appreciated. I live out of town and do a fair bit of highway driving at night and would like to be able to use them.

#1037607 - 04/11/16 11:05 PM Re: High Beams gone crazy!! [Re: MOJOMUNKI]  
Joined: Mar 2000
Posts: 5,645
upflying Offline
20+ Year
upflying  Offline
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Joined: Mar 2000
Posts: 5,645
Reno, NV
Sounds like you could have a short somewhere. The flashing headlights is caused by the circuit breaker popping. Once the circuit cools, the CB resets and starts the whole process over again.
You might try a new CB since it does handle the amperage of the low beams but not the added amps of the high beams.
Our 30 year old wiring means added resistance and corroded connections.

Last edited by upflying; 04/11/16 11:11 PM.

86 MCSS Notchback coupe, LS3, 4L65E, QP 9", Eaton Truetrac, 4 wheel disc, column shift, Dakota Digital, silver with maroon bench interior

#1037609 - 04/12/16 12:01 AM Re: High Beams gone crazy!! [Re: MOJOMUNKI]  
Joined: Jan 2016
Posts: 20
MOJOMUNKI Offline
Junior Member
MOJOMUNKI  Offline
Junior Member

Joined: Jan 2016
Posts: 20
north bay, ON
that's a good point!! thanks I'll check that... I was thinking these were fused. I didn't realize the headlights were on a circuit breaker but that would make sense!

#1037612 - 04/12/16 01:17 AM Re: High Beams gone crazy!! [Re: MOJOMUNKI]  
Joined: Aug 2007
Posts: 5,139
84 ZZ4 Offline
10+ Year
84 ZZ4  Offline
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Joined: Aug 2007
Posts: 5,139
San Antonio, TX
Your headlights draw too much power
By any chance, are these aftermarket bulbs somewhere near 55w?
The originals were 35w, so the originals would draw only 140 w.

I upgraded to H4 headlights when my car was 2 yrs old, and the same conditions happen, the 'on' period actually gets shorter in between sessions, if you leave the high beams on, you will get the smell of burnt plastic.

The best solution for this is a wiring harness, as currently al the power is flowing thru the headlight switch.
The harness will give full 13.x volts to the headlights, an instant improvement.

Here's a link to the wiring harness upgrade:
http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=690273&page=1

You can find the H4 wiring harness mostly on e-bay, anywhere from 20-40, and much higher.


#1037617 - 04/12/16 02:10 AM Re: High Beams gone crazy!! [Re: MOJOMUNKI]  
Joined: Dec 1999
Posts: 11,893
86ttop Offline
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86ttop  Offline
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Posts: 11,893
Brooksville, Fl
the circuit breaker is integral to the headlight switch, maybe it's just that the switch is old, good luck.


Leo Paugh
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POW*MIA
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#1037636 - 04/12/16 10:07 PM Re: High Beams gone crazy!! [Re: MOJOMUNKI]  
Joined: Jan 2016
Posts: 20
MOJOMUNKI Offline
Junior Member
MOJOMUNKI  Offline
Junior Member

Joined: Jan 2016
Posts: 20
north bay, ON
interesting... well the headlights are stock sealed beams not halogen bulbs. and the headlight switch is brand new just changed it a while back cause the old one was worn out had to jiggle the knob to get the headlights to work at all. Perhaps I got a faulty switch?

#1037652 - 04/13/16 12:53 AM Re: High Beams gone crazy!! [Re: MOJOMUNKI]  
Joined: Dec 2003
Posts: 1,574
spacemanspif Offline
15+ Year
spacemanspif  Offline
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Member

Joined: Dec 2003
Posts: 1,574
Sewell, NJ
Sorry for a bit of a thread hijack but would a bad light switch cause the gauge needles to flicker and gauge lights go out when the headlights go out?


-Mike

F-body bucket seats, camaro console, carb'd 5.3/4L80E swap

Fastest time to date: 13.390 @ 102.42
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Killed a few cones too

#1037661 - 04/13/16 02:41 AM Re: High Beams gone crazy!! [Re: MOJOMUNKI]  
Joined: Dec 1999
Posts: 11,893
86ttop Offline
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86ttop  Offline
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Joined: Dec 1999
Posts: 11,893
Brooksville, Fl
probably.


Leo Paugh
It's not an attitude, it's just the way I am.
POW*MIA
You are not forgotten
If things improve with age, I must be approaching magnificent. thumbs
#1037683 - 04/13/16 02:57 PM Re: High Beams gone crazy!! [Re: MOJOMUNKI]  
Joined: Apr 2000
Posts: 2,119
MikesMontes Offline
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MikesMontes  Offline
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Posts: 2,119
west central ohio
I hear this all the time ---Gm ac-delco are they only switches that hold up Mike


www.mikesmontes.com
1-800-811-5851
We have all your 4th Gen Monte Carlo needs
#1037960 - 04/18/16 10:00 PM Re: High Beams gone crazy!! [Re: MOJOMUNKI]  
Joined: Jan 2016
Posts: 20
MOJOMUNKI Offline
Junior Member
MOJOMUNKI  Offline
Junior Member

Joined: Jan 2016
Posts: 20
north bay, ON
Thanks mike ...ya ive got a gm one on order. should have known better then to by a cheap aftermarket!!!


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