Begin by accessing the database management interface of TPLCentral. You need the necessary credentials and permissions to read data from the database. Identify the specific tables or data sets you need to export.

Use TPLCentral's native export functionality to extract data. This can often be done through SQL queries if TPLCentral uses a SQL-based database. Export the data in a commonly supported format like CSV, JSON, or XML, which you will later import into MongoDB.

Once the data is exported, ensure it is clean and well-structured. Check for any inconsistencies or errors in the data format. If required, convert the data into JSON format, as MongoDB natively supports JSON-like documents (BSON).

Ensure that you have MongoDB installed on your system, along with the MongoDB tools. These tools include `mongoimport`, which is essential for importing data into MongoDB. You can download these from the official MongoDB website if they are not already installed.

Access your MongoDB instance using the `mongo` shell or a GUI tool. Create a new database and collection that will store the imported data. Use commands like `use mydatabase` to create or switch to a database and `db.createCollection('mycollection')` to create a collection.

Use the command-line tool `mongoimport` to import your prepared data into the MongoDB collection. For example, if your data is in JSON format, use a command like:
```
mongoimport --db mydatabase --collection mycollection --file mydata.json --jsonArray
```
This command specifies the database and collection to import the data into and the file path of the data.

After the import process, verify that the data has been correctly imported into MongoDB. Use queries to inspect the data within the MongoDB shell or a GUI tool. Check for data integrity and ensure that all records from TPLCentral have been accurately transferred.

By following these steps, you can successfully move data from TPLCentral to a MongoDB destination without relying on third-party connectors or integrations.