Pulsing Brake Light Fault

[GreyArea]

I bought some of the pulsing brake light LEDs from someone on here last year. I didn't know it until recently, but one of the lamps is faulty. They both work fine if I don't have my lights on, but if I have my lights on, then on one lamp, the brake part only illuminates once, then won't illuminate when the brake is subsequently pressed. This is regardless of normal, or emergency braking. Any ideas what causes this?

Is it possible to get a replacement unit, or are they only sold as pairs? I like the extra safety of the pulsing brake lights, but it's no good if only one side is coming on. I've put standard bulbs in, and they show no faults, so I'm guessing it's a circuit board problem.

Thanks

Simon

[apprentice]

I bought some of the pulsing brake light LEDs from someone on here last year. I didn't know it until recently, but one of the lamps is faulty. They both work fine if I don't have my lights on, but if I have my lights on, then on one lamp, the brake part only illuminates once, then won't illuminate when the brake is subsequently pressed. This is regardless of normal, or emergency braking. Any ideas what causes this?

Is it possible to get a replacement unit, or are they only sold as pairs? I like the extra safety of the pulsing brake lights, but it's no good if only one side is coming on. I've put standard bulbs in, and they show no faults, so I'm guessing it's a circuit board problem.

Thanks

Simon

Sounds like an earthing problem, would check to see if the earth is good on that side before condeming the light unit.