Connecting a Brake Light Module to control all 3 brake lights

[chippy818]

Hello,
I need detailed assistance badly. I am trying to connect a Brake Light Module or a "Flasher" to my brake lights for attention but I want to control all 3 lights when brake is applied, rather than just the 3rd brake light or the main brake lights. The instruction for the product looks simple enough but it clearly isn't for this poor lost soul.

The product is Brake Light Module and I have attached the instructions. I am installing it on my 18' Toyota Tacoma and the color of the wires confuse me entirely.

Any help would be greatly appreciated!

 

[DPG]

You might find that all your brake lights are connected together anyway, so probably will get all 3 coming on anyway.

 

[chippy818]

You might find that all your brake lights are connected together anyway, so probably will get all 3 coming on anyway.

Thanks. Unfortunately I wish that were the case. Well it’s a little bit more complex than that. All three brake lights are independence but must come together at some junction but figuring out where that is is another case. I tried seeing if that connection point is right below the brake pedal but without knowing the color schematics I wouldn’t even know how to start and the last thing I will need Is to start cutting and splicing with no real educated guess. I was hoping somebody would know how to proceed.

 

[telectrix]

switch connected to brake pedal. 12V feed in, other terminal is 12V out to all brake lights. this is where you need to piggyback your alternative activation.

 

[DPG]

Are you sure they aren't commoned together? Is it a modern car with CANbus etc?

 

[chippy818]

switch connected to brake pedal. 12V feed in, other terminal is 12V out to all brake lights. this is where you need to piggyback your alternative activation.

So here is my brake pedal and wire harness disconnected to see the color code. I was thinking this very same thing. The wire harness does not have much slack so I wanbted to be 100% before I attempt to start tapping and connecting the 12v feed in and then the 12v feedout. Now to determine which is in and which is out is another concern. Thoughts?
[automerge]1581628100[/automerge]

Are you sure they aren't commoned together? Is it a modern car with CANbus etc?

a modern car. 2018 Toyota Tacoma.

 

[chippy818]

So here is my brake pedal and wire harness disconnected to see the color code. I was thinking this very same thing. The wire harness does not have much slack so I wanbted to be 100% before I attempt to start tapping and connecting the 12v feed in and then the 12v feedout. Now to determine which is in and which is out is another concern. Thoughts?
[automerge]1581628100[/automerge]

a modern car. 2018 Toyota Tacoma.

UPDATE: So I managed to tap into the wire harness at the fuse box under the hood and connected it there. Thanks for all assist.

 

[DPG]

Glad you got it sorted!