LED Switchback lamps - Too fast - Why and what to do?

It needs either an led indicator resistor in line or an led flasher module grizz
Dan

Flasher module is easier if Cf13 or Cf14 should be plug and play. resistors will need some cutting of wires and soldering.

If you can find the flasher relay pull it out take a pic of the pins, then have a look on eBay for an led flesher relay with pins that look the same as yours grizz, sorry forgot you had to use your tongue to concentrate whilst changing torch batteries. The flasher module is behind the glove box, it's held in place by a plastic strap.
Dan