General light question 1931 a

[benbuilder]

I just bought a 31 Model a pickup.
Supposedly ran when parked about 8 yeas ago. working on getting it going.
The headlights have two sockets in each shell. I have no bulbs in any of the 4 holes. I have never had a Model A so forgive me. I see diagrams, but cant figure out what the bulbs do. Help please

When searching for bulbs, am i correct to think that they are as follows?

the main headlight- is it a 6 Volt - #1188 bulb?
The other upper and offset bulb is a #1129A bulb, 6v, amber? Is this a park light?