dimming..... - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Everything Electrical & Electronic Have an electrical problem? Lighting, Alternators, gauges, DIC, HUD, etc? Post it here. Please post Audio problems in the Audio forum, and Engine control problems in the appropriate Mechanical forum for your year.

Reply
 
 
 
Thread Tools Search this Thread
Old 04-18-2006, 02:39 AM   #1
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Jun 2005
Location: n.h.
Posts: 1,066
Thanks: 0
Thanked 0 Times in 0 Posts
handdrumman is on a distinguished road
Default dimming.....

Ok.....this has been happening for a while but just have done nothing about it. When I hit the brake the headlights dim & my battery gage dumps to like 10 or so, just above the red area.......what could this be.....I'm not sure if maybe I need a new altinator or not....I have an optima red top so plenty of juice for the battery....soooooo?????
handdrumman is offline   Reply With Quote
Old 04-18-2006, 02:45 AM   #2
Senior Member
True Car Nut
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

mine does that too sometimes.

My guess is alt. You and me both have the stock weakling alt and systems that put some stress on the electrical system.

editL have you done the big3 ? That helped some for me,
corvettecrazy is offline   Reply With Quote
Old 04-18-2006, 02:48 AM   #3
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Jun 2005
Location: n.h.
Posts: 1,066
Thanks: 0
Thanked 0 Times in 0 Posts
handdrumman is on a distinguished road
Default

And the weird thing is that can happen when my stereo is turned way down.......when I had my Toby sub hooked up that thing would wreck the crap out of my electrical!!

I keep on hearing about this "big 3".....what exactly is it.....to lazy to look for the topic
handdrumman is offline   Reply With Quote
Old 04-18-2006, 08:34 AM   #4
Senior Member
True Car Nut
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

increased wire size from:
alt + to batt +
alt/block - to chassis
batt - to chassis
corvettecrazy is offline   Reply With Quote
Old 04-18-2006, 10:46 AM   #5
Senior Member
Posts like a Turbo
 
Join Date: Jun 2004
Location: Lancaster/Hatfield, PA
Posts: 393
Thanks: 0
Thanked 0 Times in 0 Posts
Red Rocket is on a distinguished road
Default

Sounds like your alternator is really struggling to keep up. Do the Big 3 and then see if you still have dimming. If you do, time to upgrade the alt. Dropping down to 10 is dangerously low.
Red Rocket is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Theater Dimming? shortstuf212559 1992-1999 30 05-15-2004 02:47 AM
Theater Dimming... shortstuf212559 Performance, Brainstorming & Tuning 3 03-07-2004 11:29 PM
Auto Dimming mirror Mike G Everything Electrical & Electronic 4 12-26-2003 12:42 PM
Dimming lights dspman67 1992-1999 5 08-22-2003 12:42 PM
Adding Auto Dimming Mirror jebstuart 1992-1999 4 03-06-2003 04:13 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:06 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.