How do you change starter relay on a 99 eldorado?

To change the starter relay on a 1999 Cadillac Eldorado, first, disconnect the negative battery terminal to ensure safety. Locate the starter relay in the fuse box under the hood; it is typically labeled in the diagram on the cover. Remove the relay by pulling it straight out and replace it with a new one, ensuring it fits securely in place. Finally, reconnect the battery terminal and test the starter to ensure proper function.