Everything Works! Except Ignition

[DeadIgnition]

New to the site and browsed tons of posts as a guest but couldn't find an answer to my problem...

I just finished a full upgrade to my sound system today. Used Metra GMRC-04 to install JVC HU. All new door speakers as well as a JL Audio W6v2 DVC pushed by Hifonics Brutus 1200. Also have a 2 farad cap installed. All of the audio equipment works but the Security light is on and the car won't crank. Is there anybody who has an idea of what could be wrong? Had the head unit hooked up yesterday and drove the car with no problems.

[Crankjaw]

HMMM Usally They oringnal Head units have Security Thing inside n if u mess with it n not getting right Cable n what not Then your car will not Start Because The Security will not let it.
Just Like If it was a delco radio. If u replace it with another Delco Radio it will not start bc its locked.

[redzmonte]

The radio shouldnt have any effect on the ignition starting. you can drive the car with no radio.I also assume the battery in the car is not dead from the doors being open during the install.. (would have enough charge to light everything up but not enough amps to crank the starter.) Also check the fuses under the hood and in the rear fuse pannel under the back seat, might have poped something on accident.

If thats all good try this.
Try to close the door, cycle the lock and then the unlock from the key fob to make sure then security system isnt cutting the starter. do you have another key to try, maybe that one lost its program. Lastly if that doesnt work try a security relearn to reprogram then key.
How do I perform a security relearn?
1. Try to start the vehicle.
2. Turn ignition to OFF for 10 seconds.
3. Turn ON (NOT START) the ignition (using a black Master Pass-Key III key, not a gray Valet key).
4. Observe the SECURITY telltale on the dashboard. After approximately ten minutes it should turn off for the first time.
5. Turn OFF the ignition and wait for ten seconds.
6. Turn ON (NOT START) the ignition (using a black Master Pass-Key III key, not a gray Valet key).
7. Observe the SECURITY telltale on the dashboard. After approximately ten minutes it should turn off for the second time.
8. Turn OFF the ignition and wait for ten seconds.
9. Turn ON (NOT START) the ignition (using a black Master Pass-Key III key, not a gray Valet key).
10. Observe the SECURITY telltale on the dashboard. After approximately ten minutes it should turn off for the third time.
11. Turn OFF the ignition and wait for ten seconds.
12. Start the vehicle.

Notes: If your car starts at any time and stays running, you are done. If your car starts and dies, try step 9. If it dies after 2 seconds after you have done these steps, you either have a bad FP resistor or the security setting in your PCM is wrong and it will need an update. Security relearn procedure will not work with the valet key!