What size bulb to buy?

[FullKlip]

Does anyone know what the reverse bulb size is? i just ordered size 192 superwhite led's to replace it, but i read somewhere else that the size is 7440. wtf, why are there so many damn bulb sizes??!?!?! (bang)

 

[36Crazyfists]

I think that 194 bulb is really small and for the dash guage lights, your reverse is something like 1156 type A i think.

 

[Powells85]

921... I did the hyper white bulbs for my reverse and it looks pretty good, nice and bright too. 194 is the small wedge bulb used a lot in side markers and interior lights.