What size bulbs

[Scirocco]

Can I use ordinary bulbs in this cluster or must I get Honda bulbs which seem quite expensive (as does everything else I need)
If so what would you recommend.
1977 Honda CB750 F1

 

[madmtnmotors]

$1.38 is too expensive? The same bulbs were used in 70's and 80's Honda cars, Honda part #34902-259-000:

https://www.hondapartsnow.com/genuine/honda~bulb~dash~34902-259-000.html

 

[pickleknuckles]

They're BA9S bulbs. You can even get LEDs w the same BA9 base these days for a buck or two.That said, LEDs won't work in the indicator positions for turn, oil, or neutral without resistors and whatnot.