Installing a rear brake light kill switch means that you have the option to turn off your rear lights, which is surely not a safe idea, especially if you’re planning on driving around like that. However, it is possible to do and it’s highly recommended that you add a buzzer or some sort of signal as well so that you know when it’s on to avoid getting a fine or worse.

These diagrams use relays to connect your rear brake light kill switch:

User posted image

 


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dewby

Joined: Nov 11 2008
Posts: 5
Post Wed Nov 12, 2008 1:10 am

I would like to install a brake light kill switch, and i dont know how to go about doing this the proper way. I want it so when i flip the switch it kills the brake light and then lights an indicator lamp, and buzzer so that way I know when I have it on. Also when we are on the topic, I am have seen people make a rear light kill switch so basically one switch kills the entire rear of the car, axillary lights, tag light, running lights etc.. but also being able to keep the headlights on. How difficult would it be to do these mods?

*yes yes i know, its a bad idea. i just think it would be one of those cool o’ look at this mods*

02cougarman

Joined: Jun 23 2008
Posts: 924
Location: OH
Post Wed Nov 12, 2008 7:00 am

i would advise not to do this…
Phil
Owner, Oznium.comJoined: Feb 11 2003
Posts: 7719
Post Wed Nov 12, 2008 8:45 am

Best way is with relays, but I don’t have time to draw a diagram now.
Phil
Owner, Oznium.comJoined: Feb 11 2003
Posts: 7719
Post Wed Nov 12, 2008 2:54 pm

Ok I just had some downtime on the airplane. Here’s a diagram for you 🙂

If I may offer a suggestion… to be even more inconspicuous, you should get a pair of night vision goggles and just turn off all the lights in your car.

User posted image

corvettecrazy

Joined: Dec 17 2003
Posts: 4357
Location: moved (twice)
Post Wed Nov 12, 2008 2:58 pm

I would have said use 1 relay and switch the ground wires for all the lamps at once. But that is just me.
Phil
Owner, Oznium.comJoined: Feb 11 2003
Posts: 7719
Post Wed Nov 12, 2008 6:36 pm

Good call dude, that will be a lot easier! How’s this look?

Correct me if I’m wrong, but I think some auto manufacturers use a common positive (with switched ground), while others use a common ground (with switched positive).

User posted image

bad venge

Joined: Jul 28 2007
Posts: 3550
Post Wed Nov 12, 2008 6:52 pm

Wouldn’t it be easier to kill it at the brake light switch output ???
corvettecrazy

Joined: Dec 17 2003
Posts: 4357
Location: moved (twice)
Post Wed Nov 12, 2008 8:51 pm

That should work for both BL but wont turn off the TL

Pin 30 from the TL gnd
87a to gnd

Should turn off everything that shares that ground.

Yes you are correct some vehicles are common ground positively switched and others are common positive and negatively switched.

dewby

Joined: Nov 11 2008
Posts: 5
Post Thu Nov 13, 2008 9:22 am

Thanks for help guys, but one other question. How difficult would it be to make a headlight and dash light only switch? That way when I flip the switch the only that lights that light up is the headlights and dash lights.
blktbon20s

Joined: Jan 29 2007
Posts: 2316
Post Thu Nov 13, 2008 9:33 am

love the “purpose” on Phils diagram hahaha
Kindschi

Joined: Oct 09 2008
Posts: 1458
Location: St Louis Missouri
Post Thu Nov 13, 2008 7:07 pm

My Old repo truck had a kill switch for all lights exterior and one for all lights interior, my buddy did all the work and he hated it lol…. But I helps get in and out of ghetto without beeing seen.. Great for apt complex’s