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Username Post: 3rd brake blinks with left turn signal        (Topic#345083)
"2nd Year" Silver Supporting Member
Posts: 68
Loc: Niagara Falls NY
Reg: 08-10-08
05-30-17 04:04 PM - Post#2693568    

If I connect the 3rd brake light to my brake light wire in the trunk it will blink with one of the turn signals. Does anyone know what the adapter for this is called and where I can get one or is there another way around this without running wires to the switch? Any one else been down this road?
Thanks, Russ


Posts: 27999
Loc: San Francisco, CA
Reg: 11-26-02
05-31-17 06:31 PM - Post#2693762    
    In response to Dustythedog

I think you will have to bite the bullet and run a wire up to the brake switch. I'm not sure if a commercial adapter even exists. It would certainly be possible to design one, but the circuit would take at least a second or so before it "knows" whether it is sensing a turn signal or a brake pedal application. In an emergency stop situation, that much delay could be enough to cause a collision.


Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.

"2nd Year" Silver Supporting Member
Posts: 68
Loc: Niagara Falls NY
Reg: 08-10-08
05-31-17 06:38 PM - Post#2693766    
    In response to raycow

Thanks Ray, Connecting directly to the switch is probably the answer.

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Loc: Baltimore, MD
Reg: 11-27-04
06-18-18 06:21 PM - Post#2737429    
    In response to Dustythedog

Since the wire from the switch goes through the turn signal switch and flasher to interrupt the brake light to cause it to flash, you have to hook the wire directly to the switch.

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