lights are on but engine won't crank

What do you mean it won't come on?

Check the battery. Check the main fusible link. You may have a defective ignition switch. Do the headlights and taillights work? Does the engine turn over? Do the brake lights work?

I have checked the battery. My headlights, tail light come on. The engine make no noise. Nothing come on but the lights

Earlier you were advised to check main fusible link-go check/test then comeback

Were is the fusible link and how do u test it

I think it may be the ignition switch. I have attached the schematic to help you check it. I have also attached an image of the main relay box showing the 3 main circuit breakers. One of those may be blown.

Check at the alternator lite blue color wire

Also check at the integrated power module. See image.