more than likely there is a problem with the light stalk. see if you can borrow one to plug in and check as the later ones are very expensive.
Wipers
Deacrese
Yes, the indicator react with the solution.
You can restore headlights on a dodge charger using the Meguiar's Headlight Restoration Kit.
No
no
ferroin indicator
A universal indicator is an indicator that changes color along with changes in pH level. The purpose of using it is to find a point at which a mixture of acid and base becomes neutral.
You could make a plant indicator using ur forhead
Using an indicator.
The temperature indicator is called a thermometer. The birds flying south are a good indicator of winter's approach.
knife marks? i think that would be a pretty good indicator.