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I am trying to find an easy and cheap way to disable my automatic headlights on a '99 Silverado. I have tried the "push the dome override buttom 4 times" trick and it doesn't work. I have also seen a link to an aftermarket switch that performs this task, but the link is dead. Please help!
 

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nedrierson78 said:
I am trying to find an easy and cheap way to disable my automatic headlights on a '99 Silverado. I have tried the "push the dome override buttom 4 times" trick and it doesn't work. I have also seen a link to an aftermarket switch that performs this task, but the link is dead. Please help!
There is a way...I've done it one mine....

Basically you will need a pair of wire cutters and a 1.5K ohm 1/2 watt resistor that you can get at Radio Shack. Electrical tape and possibly some wire nuts will work to wire in the resistor. You can solder the wires if you wish.

You may want to remove the neg. battery cable to assure you don't do any unwanted damage to the electrical system. This is not necessary, but a good precaution to take.

First locate the Body Control Module (BCM) which is under the dash, below the steering column. Laying on the floor, this should be visible without removing any dash panels. You should find a purple connector (C3). Unplug it.

Located the white and gray wires (A4 and A6). I don't remember if white is A4 and gray is A6 or vice versa. It doesn't matter anyway.

Clip these two wires that are coming off this plug (C3). Leave a few inches to work with. Tape up or place wire nuts over the other end of these wires that go up under the dash(they go to the light sensor). You have now removed the light sensor from the electrical system and is now just a dash orniment.

Connect the gray wire from the plug (C3) to one end of the resistor and the white wire to the other end. Make sure you tape up all wires to prevent a short. You should now have a gray wire coming from C3, going to one lead of the resistor and the white wire from C3 to the other resistor lead. Plug in C3 to the BCM and replace the neg. battery cable if you removed it. Start the truck and make sure the lights are off."
 

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Loves yoga pants
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fullthrottledan said:
i hit my dome light override 2 times. lol i hate those things
Problem he's having is he has a 99...the dome light override button hint doesn't work on 99...only on 2000 to present. Unless of course he changes out his 99 bcm with a newer bcm, but that has another fun method to change that one out...one that I tried, but couldn't get to work...so I sold the 00 bcm to someone else and did the above mentioned mod.

Pat
 

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I did the resistor Method listed above. I also put in a switch, so I can choose between having them automatic, or manual.
 
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