Not starting

Good evening,

If the light goes out, it is not the security system at all.

https://www.2carpros.com/articles/how-to-reset-a-security-system

I attached a diagram of the starting system for you to view. We need to do some testing at the relay.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/starter-not-working-repair

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Roy

I never saw the light until i hot boost from a truck then light was there. reset it once then when i was tighten battery cable socket touch other terminal and now light is back.

Check all your fuses with a test light to see if any have failed.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Hopefully the only damage you did was blow a fuse.

Roy

What main fuses should i be checking?

I would check every fuse in the fuse block.

I attached the diagram of the fuse block for you to view.

Roy

I have another issue with 2005 Jeep Grand Cherokee. i change out the crankshaft sensor and the cam sensor now it cranks but will not start. checked all fuses they are good. Any suggestion?

We can only deal with one vehicle per question.

Please start a new question and I will be glad to help.

Roy