I keep getting text to call or go online to see if I need recertification. I can not get through to either. I have to go to public library for internet

Since it would take many pages of instructions here on this venue, we should recommend you go to a car parts store or a public library and get an instruction manual to do the job.
(This task could be a coupe of hundred steps.)
The manuals often are published by :" Motor's", or "Chilton's" , or "Haynes".
There are several others.
God bless your efforts.

Hello, Aster -

I assume you are in the USA.

Your local public library system probably subscribes to one or more automotive repair manual databases, which would include information (with drawings and diagrams) on repair of your Dodge Grand Caravan. The repair manual information for your vehicle will probably have the information and illustration/s you need

If you are not familiar with the auto repair databases, but do have a valid library borrower card, you can find the phone number for the main / headquarters public library system, call the library, ask to be connected to the reference / information desk, and ask one of the librarians to talk you through how log in and access the database where you can see and download (PDF format) the relevant pages for your vehicle.

Note: The headquarters library in your public library system may be the only one open on a Sunday.

If you do not have a valid library borrower card, you will need to visit your local public library and apply for one. You will need an official photo ID (driver's license and perhaps some other form of ID which verifies your residential address - electric bill, cable / dish TV services bill, etc.) to complete your borrower application.

While you are at the local public library, ask one of the reference / information librarians to pace you through access to the auto repair database/s. You can then find the right information and either print the pages you need at the library (may be a printing charge) or send them as an attachment to your email address, so that you can print the pages at home.

Note: If you do not know how to find the phone number for the main public library or do not know where the public library nearest you is, you can conduct a search using your favorite search engine (Google, Bing, Yahoo Search, etc.), using this search strategy, with quotation marks as shown:
"Your City Name, State" "public library"
Example: "Upper Sandusky, Ohio" "public library"

Your public library = Your taxpayer dollars at work!

Hello, Jimberry -

I haven't found such a video tutorial. However, your local public library system probably pays for a subscription to automobile repair manual databases. The repair manuals provide instructive images for all kinds of repairs, including replacing brake light bulbs.

If you can, I suggest you take the time to visit your local public library and ask a reference/information librarian about how to access the library's dabases of auto repair manuals. Most public library provide access to the databases of auto repair manuals online through their websites. However, for remote access one needs a valid library borrower card. If you do not already have one, then you will need to apply for one at the library.

If you have a valid library borrower card, then I suggest you telephone the library and ask a reference/information librarian to talk you through the steps to enter the right auto repair manual database for your 2008 Mercury Grand Marquis.

To find the main telephone number for your library, use your favorite search engine, and enter the following search strategy (with the relevant place names), with quotation marks, as shown:
"public library" "city, state" . Example: "public library" "East Upper Nowhere, Wisconsin".
The search results will include the link to the library system home page.

Best wishes.

Added: This YouTube video is for replacing a bulb in a different year model Mercury Grand Marquis may prove helpful:
https://www.youtube.com/watch?time_continue=31&v=Uw7a83iDx-Q

if you go to your local library you can get the steps for car repairs jobs printed out for you for free. its hard to find this type of info online. car repairs manuals are not free online but to libraries who purchase access for public. i have worked on 91 corolla timing. a few screws around housing and off it came. may have been some other parts needed removing to get it off too. like alternator, etc. not hard job

Nothing is really free anymore, except for libraries, and there you pay for the card. your best bet would be to Check with your local public library. one called EBSCO which you can read from home by entering your library card number online, and a better one called ALLDATA that you can only access at the library. But both are free!
Additionally, you probably can check out a Chilton or Haynes from your library.

Go to Autozone.com They have a repair section on their website. Enter your make and Model...Navigate to the section of repair you need. They have enlisted the services of AllData...so its fairly comprehensive. Also, many public libraries have online auto repair manuals for free. You'll need to join your library, get a card and a password for the online site....Good luck...

Theroadisalover

Go to Autozone.com They have a repair section on their website. Enter your make and Model...Navigate to the section of repair you need. They have enlisted the services of AllData...so its fairly comprehensive. Also, many public libraries have online auto repair manuals for free. You'll need to join your library, get a card and a password for the online site....Good luck...

Theroadisalover

FOR THE 4.0L ENGINE ALTERNATOR ON BOTTOM. FOR THE 4.6L ENGINE ALTERNATOR ON VERY TOP.

Go to Autozone.com They have a repair section on their website. Enter your make and Model...Navigate to the section of repair you need. They have enlisted the services of AllData...so its fairly comprehensive. Also, many public libraries have online auto repair manuals for free. You'll need to join your library, get a card and a password for the online site....Good luck...

Theroadisalover

do you have library card? might be your local public library subscribes to an online research database like mine does. the one i can use is called auto repair reference center. it's not as comprehensive as mitchell or alldata but it's free. the catch is you have to get to it through the library website and you have to have a valid library card number to get in. hope that helps.