[mcnvgget]

i have a 2018 toyota 86 GT and i got a 4th brake/running light for the oem reverse light but can’t seem to make it work, black is ground but when it comes to the red and blue wire which i’ve mixed around red with red and blue with green and switched, the bright brake light is running and when brakes are applied it turns off or dims but it turns all of my other brake lights on too, or there isn’t a running light but the brake light works so i went with just no running light but brake light works so i clamped the wires together and tried it but nothing worked like what happened? the wire cut through the harness but still. is my light just defective or can anyone give some tips for me?


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