Preparation
Source a donor instrument cluser from 2001-2005 NBFL Mazda MX-5 and always check, if it has the warning light (some 2001-2002 might not have). Remove the instrument cluster from your car: remove the trim around the steering wheel, then undo the 4 bolts holding the instrument cluster in place and carefully disconnect all the cables.1) Open the spare instrument cluster and remove the warning light circuit board


2) Carefuly open your instrument cluster and make room for the circuit board in the same spot as it was in NBFL


3) Install the circuit board into your cluster the same way as it was in the donor cluster.

4) Take off the light shade from the donor cluster and put it into your.

5) Carefully put some solder onto the bulb’s contact points.

6) Put the bulb into the cluster and solder wires to it’s contacts.

7) Connect the wires as on the photo (best is to use crimp rings).

Ciao
I can confirm that it works also with a UK version of donor cluster.
At the end I used a standard bulb and not a led one!
Thanks for the hint and tutorial!
Giacomo