Does NOT dose. Dose is like a dose of medicine.
The reason your turn signals are different is because
a previous owner may have installed a single element bulb in a dual filament socket.
Remove the single element bulb and and look inside the fixture.
If you see two round contact points then that is the case,...( wrong bulb).
You can put any turn signals on it that you want but when you buy them make sure it has a regular tail light and a brake light. The brake light bulb element is the one used for turn signals.
On a Roadstar Adventure.