The speedometer has 3 light sockets, are they interchangeable?

[Willem Tell]

What car are we talking about?
Every coupe I know of has the turn signal light in the speedo.
Hi beam is in the combo gauge.

Don, you're right; I repeated earlier comments, but it is the turn indicator.

 

[mark99]

thanks, got it on the high beam vs. turn signal, but not an issue, clearly 3 bulb / wires for the speedo, and the color coded one goes in the bottom

 

[Willem Tell]

In case you missed it from other threads, as long as you have your instruments out and in hand, swapping up to 4W bulbs is a good idea.

 

[mark99]

In case you missed it from other threads, as long as you have your instruments out and in hand, swapping up to 4W bulbs is a good idea.

Thanks, I did see that, 4W bulbs, in my search so I am doing that