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How-To Remove "auto" headlamps?

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Old Aug 10, 2009 | 10:10 PM
  #11  
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Originally Posted by Steve Bryant
I think that you are too paranoid . . . at least about your HID headlamps! I am an electrical engineer for a general aviation aircraft manufacturer. I've mostly been in avionics my whole career (30+ years), but I've done a lot of stuff on the power generation and distribution side too. On/Off cycles can affect bulb life somewhat, especially incandescent bulbs, but only a little. It's mainly the expansion/contraction cycling on the tungsten filament.

But I would'nt worry about the ambient light sensor operation on your HID or any other kind of liights at all. Most all OEM systems that are HID (GM/Ford/Chrysler/German/Asian Manufacturers) have ambient light sensors and I'm sure that they don't measurably shorten lamp life. Just my 2 cents.

Steve
maybe so, when i said bad for them i meant hot on/off starts in general but forgot to say that. and your right OEM hid systems do it, my mom has a nissan with it, everytime u start it in the garage the hids pop on, everytime u pull in they pop on. thats twice per drive, will they last 100k+ probly so, is it unneeded imo, yes especially since the only reason its there are people are to lazy to reach down and turn there lights on. but when it comes down to it, i want control over my lights like said above.
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Old Aug 10, 2009 | 10:45 PM
  #12  
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Update: no issues with auto AC

I soldered a diode across the "Low Reference" and "Light Sensor" leads entering the BCM (under the dash). The auto AC seems to still operate normally.

In addition to dissabling the "auto headlights", I did a few other mods.

- Soldered a diode across from the "Headlight Signal" (switch signal) to the "Headlight Relay" (output to relay). This keeps the Lows on when the Highs are on.

- Soldered a diode across from the "Headlight Signal" (switch signal) to the "Fog Relay" (output to relay). This turns the Fogs on when the headlights are on (Fogs can still be turned on independent of headlights by pushing Fog light switch).

Keeping both the Lows and Fogs on while being able to run Highs adds considerable light to the road! I have done this on both my Camaro and Silverado, and neither have ever had any issues from doing so.

Happy Days

Last edited by 2001CamaroGuy; Aug 10, 2009 at 10:52 PM.
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Old Aug 10, 2009 | 11:48 PM
  #13  
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good 2 hear, ive been wanting to do the headlight one for awhile after i did the autolights, you got diagram or connector and pin #s with wire description?? i should jus look around cause like i said theres a writeup somewhere on these instanets..
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Old Aug 11, 2009 | 12:26 AM
  #14  
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There are 5 (total) connectors on the BCM, 3 large, 2 small. They are #s 1-5 from left to right (C1, C2, C3, C4, C5....Driver's to Passenger's).

- Headlamp Switch Signal (from switch) = White, Pin A12, connector C4
- Low Beam Relay Control (output to relay) = Pink/White, Pin A4, connector C2
- Fog Lamp Relay Control (output to relay) = Dark Green/White, Pin A5, connector C2
- Ambient Light Sensor (signal in from sensor) = White, Pin A4, connector C3
- Low Reference (for ambient sensor) = Black, Pin B7, connector C4

Attached is the schematic I edited to show where diodes are placed.



Note: This is for 2004 models. I'm not sure what other years are the same.
Attached Thumbnails How-To Remove "auto" headlamps?-2004headlightmodwire0001.jpg  

Last edited by 2001CamaroGuy; Aug 11, 2009 at 12:37 AM.
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Old Aug 11, 2009 | 01:14 AM
  #15  
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now thats good info, thanks. anybody that searches should be happy to find this, who am i kiddin nobody searches anymore..
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Old Aug 11, 2009 | 01:18 AM
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Originally Posted by skolman91
now thats good info, thanks. anybody that searches should be happy to find this, who am i kiddin nobody searches anymore..

search? what's a search? ...
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