Outside LIghts

Not quiet sure what your describing? Do you have 2 outside lights, one white and one yellow.

Or

Do you have 1 light fixture and it changes from yellow to white?

My outside lights take the standard old style automotive bulbs, 1156, which is a single post bulb with one filament (used for running lights). The 1157 is a double element post. One filament is used for running lights, the other for turn signal and stop lights. The taller one is the turn signal-stop light.

However, if one light fixture fixture turns from white to yellow, I have no clue what that kind of bulb would be:

1157 (double filament)



1156 (single filament)



The 1156 also comes in Amber color too:

I have two inside switches. When I turn one on the light is white and when I turn the other on the light is amber. The amber light has quit working. I opened up the outside expecting to find two separate bulbs one clear and one amber, however there is only one bulb in the light.

Are there any identifying marks on either the glass or the post??
How many terminals are on the bottom of the post?
Is the glass clear or amber?
Can you post a pic of the bulb?

3157 switchback led bulb ?

It must be a LED lamp. An incandescent bulb can't change colors.

Post a photo of the fixture and the innards of it.