received yesterday nice Rotarytronics combo display (oil pressure and temperature, shift-light) to install in Mazda Mx-5 NC cluster

as you can see cluster gauge is already modified (Revlimiter). Installation was trouble free, following manual created by Ciprian from Rotarytronics

przy okazji przypomniałem sobie o trybie testowym zegarów - który można uruchomić "z palca" nie używając żadnego sprzętu diagnostycznego

documentation says you can do following tests:

Check code Check item Related items
01 SAS control module Seat belt warning alarm
04 Door switch
 Lights-on reminder warning alarm
 Key reminder warning alarm
08 TNS relay
 Lights-on reminder warning alarm
 Each illumination light
12 Speedometer
13 Tachometer
14 Buzzer
16 Fuel-level warning light
18 Ignition key illumination

22 Fuel gauge sender unit
23 Fuel gauge
25 Water temperature gauge
26
 Odometer/tripmeter (LCD)
 Warning and indicator light
28 Oil pressure gauge
31 Key reminder switch Key reminder warning alarm
57 Panel light control Illumination light bulb
59  CAN system  Fuel gauge sender unit