Adding 3rd brake lamp

[GP4U2NV]

I got a brake lamp from a 85 Monte SS, I want to add it to my regal (83). I am looking for install tips and more importantly the wiring.

Thanks for the help

 

[565bbchevy]

I added a third brake light to my Monte, I just spliced into the wiring in the trunk going to the brake lights.
I also added a logic module so the third brake light wouldn't blink with the turn signals.

 

[GP4U2NV]

There is the answer I was looking for where or what is a logic module?

 

[565bbchevy]

There is the answer I was looking for where or what is a logic module?

The logic module I believe you splice in to both the right and left brake lights and it knows the difference between brake lights and turn signals so your third brake only comes on with the brakes.I did mine 10+ years ago and I think I bought my logic module from JC Whitney but I know other places online sell them just Google it. It is only needed in applications where the brakes and turn signals use the same lamps.

 

[GP4U2NV]

Sratch that.......

I just thought about what you said. Ill just go buy 2.00$ worth of diodes and make my own. Thanks tho 8)

 

[85GPLef41]

There is the answer I was looking for where or what is a logic module?

The logic module I believe you splice in to both the right and left brake lights and it knows the difference between brake lights and turn signals so your third brake only comes on with the brakes.I did mine 10+ years ago and I think I bought my logic module from <a href="http://jcwhitney.com/" rel="nofollow" target="_blank" title="Link added by VigLink" class="vglnk">JC Whitney</a> but I know other places online sell them just Google it. It is only needed in applications where the brakes and turn signals use the same lamps.

I tapped into my brake switch to activate my 3rd brake light, it worked fine for a grip but one day the top of the 3rd brake light melted!! :shock: SO i have another i'm goin to reinstall. you have any pics of the logic module? Never heard of it. 😀

 

[565bbchevy]

There is the answer I was looking for where or what is a logic module?

The logic module I believe you splice in to both the right and left brake lights and it knows the difference between brake lights and turn signals so your third brake only comes on with the brakes.I did mine 10+ years ago and I think I bought my logic module from <a href="http://jcwhitney.com/" rel="nofollow" target="_blank" title="Link added by VigLink" class="vglnk">JC Whitney</a> but I know other places online sell them just Google it. It is only needed in applications where the brakes and turn signals use the same lamps.

I tapped into my brake switch to activate my 3rd brake light, it worked fine for a grip but one day the top of the 3rd brake light melted!! :shock: SO i have another i'm goin to reinstall. you have any pics of the logic module? Never heard of it. 😀

I don't have a picture since it is already installed, but from what I remember it was just a small plastic rectangle with a few wires coming out of it, I'm sure different makers have different styles.

 

[Bonnewagon]

My JC Whitney light came with the logic box, now it's seperate. Here it is.http://www.jcwhitney.com/logic-circuit/p2003583.jcwx?filterid=u0

 

[GP4U2NV]

I just made one of those logic modules. With 10 amp diode's and some wire.

Now, the next question where is the correct location for the 3rd brake lamp.

 

[Bonnewagon]

Could you post a schematic of your home-made arrangement?