I'm sure this is a known issue so I'm hoping the fix is known and easy to advise on. I had an advisory last MOT that several of the LED lights had failed in the rear indicator units. So I bought new LED bulbs and installed them easily enough. However the indicators are now flashing too fast, over the 60-120 flashes per minute allowed by the MOT test. I had, wrongly obviously, assumed that if the indicators had been switched to LED in the past that the required resistors were already in place. So ... what do I need to buy and how do I need to complete the installation?
