u/Classic_Rule391

So my 25 Gr86 lefts turn signal has been lighting up when I step on the brake. Prior to this issue I had hyperflashing issue when I tried to put on my left turn signal but it doesn’t happen often. This braking and left turn signal issue only started happening after I installed the driven media 4BL mod. However, when I tried to disconnect the posi taps I had connecting to the taillight, the issue persisted. It will only stop lighting up while pressing on the brake if I disconnect the tailight from the main harness from the car.

Does that mean it has something to do with the tailight itself but not the aftermarket mod? Since it still flashes after I removed it? If anyone has any suggestions please let me know!