Grzegorz....2 bulbs....could be....JackW posted this....
"Here is the part numbers for the speedo lights from superbrightleds.com
Quantity: 1
Product: 74-xHP Wedge Base LED Bulb $ 2.49 (each)
Options: Red 74-RHP
Quantity: 1
Product: WLED-x4 LED bulb $ 1.59 (each)
Options: Red WLED-R4
I bought mine in red and it looks great at night"
Maybe Jack will jump in here and straighten me out.
I assumed the 74-RHP bulb was for the Tach. That's where I put it and it fits/works fine.