FBC Brake T Harness

I am having a hard time getting the passenger side Brake T harness with parking light figured out. Blue is Brake and Green is Park.

I got a 3-way connector for the ground, brake, and park. If I connect each wire into the 3-way, it triggers the driver side brake light, passenger side brake light, and canopy brake light on without pressing on the brakes. This triggers the "brake and gas pressing on same time" warning on the dash. Connecting only the Green-Park wire does what it's supposed to do.

It's either i have the Blue wire or Green wire connected, can't have both. I currently have the Green-Park wire disconnected.

 

I see a blue and a tan wire, that leads to a third brake light? You need to know which is power and which is ground. Brake to power and ground to ground.

Parking light input would be for a 3 conductor brake light. This should be obvious but you don’t connect blue and green together, they are independent circuits. You can use the single ground for both grounds if you have some light somewhere that you want off parking lights.

I assume based on what you are reporting that you’re attempting to connect parking lights and brake lights together thinking that your 2 wire third brake light would be on with either? That’s not a proper setup, parking light should be a dim light and brake full brightness. You need a 3 filament bulb or 3 wire led assembly to have a parking light aka a running light.

 

Yes, brake to power, ground to ground.

Yeah, thats what I was thinking.

Is splicing the green wire into the top brake light wiring a viable option? Or just get a 3 wire assembly and work that in?
Thanks!!

 

Parking lights should be dim, brake lights should be bright. If you truly want a third brake light with parking lights you either buy one with 3 wires or you handle the dimming yourself with a PWM dimmer that turns 3 wires to 2

https://www.diodedynamics.com/2a-led-pwm-dimmer-with-bypass.html