There are a few things that can cause this. A blown fuse, starter relay, wiring issue, starter itself, and so on.
With that, the first thing is to check the ignition fuse in the under hood fuse box. See pic 1
Next, check if the vehicle will start in neutral. (I'm assuming it's an automatic transmission) See pic 2 Also, here is a link that explains how to test a neutral safety switch:
Next, check if there is power to the smaller purple wire on the starter solenoid when the key is in the start position. See pic 3. If there is power in the start position and there heavy gauge wire from the battery to the starter is properly connected and the battery charged, replace the starter.
If there is no power, check the starter relay in the under hood fuse/relay box. See pics 4 and 5
As far as testing the relay, if there is another relay in the box with the same part number, switch them. If there isn't, the last link below shows how to check one. Other than testing it, you will need to get a new one or use a known good one.
Here are links to help with the testing and inspecting:
I realize this seems like a lot, but really won't take too long. If you need help or just have questions, let me know.
Images (Click to enlarge)
Friday, February 21st, 2020 AT 4:21 PM