I have a 99 GMC Sierra RCSB. and i cant find how to turn the headlights off. someone told me to press the dome overdrive button 4 times. It workd on an 02 sierra. but not mine

 

This does not work on the 99's.

 

if you put the e-brake in like 1 click it should kill them too.

 

yeah and it will make a beep to let you know that the brake is on wont it?

 

Using the e-brake is tricky though, I think. If you engage it 1 click before you turn on the ignition, it will work. But if you wait until after the truck is started, it will only be effective in shutting down your DRLs. Your headlights will remain on until the vehicle is turned off. You can probably run a kill switch to it yourself.

 

Why do you want to kill you automatic lights, do you think you will outrun the cops after you tee-pee the police station or egg it.

 

You can unplug the head light sentry in the dash. Then put a resistor in the plug in place of the photo sensor. Thats what I did because I dont want the headlights on unless they are needed. So as not to kill my Xenarc HID bulbs. Bunch of on-off cycles are hell on HID capsules. Especially if the capsule hasnt cooled down enough before you flip them back on. This case can be viewed when you hit the panic button by accident. Headlights will flip on and off till you turn it off. Great way to significantly reduce the life of a $100 dollar set of bulbs.

 

Can you point me to a website to show me how to make a killswitch for that. I dont know a lot about wiring and stuff.

 

I replaced my bcm. It can be done, and when you upgrade to an 00+ bcm, you can reprogram the auto locks. I still retain the autolight feature, but if I want to turn off the lights, or drls, I can.

 

I don't know of one, but basically what the switch is doing is interupting the power to the bulb. The switch is left in the on position and the auto headlights come on as they normally would. But when the switch is turned off, the circuit closes and the headlamps don't get their power. I don't have a wiring diagram. I would do it the hard way by running wire from the headlight sockets all the way to the cab. So you may want to ask someone else. I always make things more difficult than they are. But in theory, this is a simple operation. I guess the hardest part is finding a spot for the switch. I would want it near the headlight switch. If you don't have a 4WD, that pocket is good for a few switches.