I changed the batteries on my F350. This set the alarm off on the truck. I cannot get it to turn off. I finally had to cut the wires to the siren. The lights still flash for a minute or longer everytime you open the door or start the truck. How can I shut the alarm off?

so whats the problem you cut the wire and it works....

try disconnecting the battery for a couple of minutes so the electrical system reboots itself with a clean start. That might fix it. IU would give it 10 to 15 minutes disconnected before reconnecting and trying it. Further to that i would say take it to the dealer and send the bill to the place that did your oil change

I would go with a direct to the battery red wire with a in line fuse Ground should be when you have anchored it to the frame other wires as they go to the alarm unit itself

try connect the siren positive ( normally red ) wire to ur car battery + terminal ( but make sure u cut or disconnected the other end that go into ur alarm unit ). Also check the ground wire ( normally white or white/black ) that attached to car body from ur siren..

Your alarm sytem went off because it thinks you disonected the batteries to steel the truck, ect, call a ford house,i hate these new computerized cars, were stuck with them, check you owners manueal, Matt

well i would imagine if you turn it on and just disarm it that might work? or if you plug the battery back in just disconnect the siren if you have too.... i mean if u want the alarm to still work then try disarm it but if u dont care just cut one wire going to the siren.... hope this helps its really hard to fix this without being there to see and observe the issue

Below is a fast installation guide for most car alarm systems. Refer to your manual were needed. Car alarms can be hard to set up and include bands of wiring and sensing elements to instal. Take it step by step and taking after the operating instructions cautiously.

Steps to installing a car alarm system.
1. Mount the siren to a solid surface under the hood. Make sure that you point the horn of the siren toward the ground so that moisture won't affect the sound or horn.
2. Drill a hole through a rubber grommet in the firewall of the car and feed the sirens wire through the hole into the passenger compartment of the car.
3. Feed the power wire through the same hole on the passenger side. Make sure there is enough slack to reach the car's battery. 4. Connect the alarm's power wire to the battery.
5. Put a fuse on the power wire next to the battery.
6. Mount the shock sensor as described in the car alarm's manual.
7. Drill holes in the dash were you will want to place the LED status indicator. Feed the LED's wire through the hole and place the double-sided mounting tape to the back of the LED and place it over the hole in the dash.
8. Find the wires that work the car's power door locks.
9. Connect the door-lock relay to the lock/unlock wires and connect the alarm wire to the relay in the manner described by the tech advisor. 10. Locate the wire that works the courtesy light if the alarm has current sensing.
11. Connect the current sensing line from the alarm to the courtesy light wire.
12. Locate the factory door trigger if the alarm does not have current or voltage sensing.
13. Connect the factory door trigger to the alarm.
14. Locate the starter wire on the steering column below the starter switch. Cut the line and connect the starter disable relay. Connect the starter disable wire from the alarm to the relay.
15. Mount the valet switch somewhere under the dash.
16. Connect all the wires to the proper inputs and outputs of the alarm.
17. Find a sturdy surface under the dash and mount the module under the dash.
18. Use tie wraps to secure the wires of the harness and mount it under the dash.
19. Arm the alarm and test. Adjust the sensitivity as needed.

Do you still have your Key Fob? The siren is impossible to turn off without the Key Fob.
Can you start the car? If working properly, the siren will be accompanied by all the marker lights flashing and the car's ignition being disabled.
If you can still start your car, you may have to disable your siren. NOT A GOOD IDEA!
When the battery was installed, did the fuse on the positive side get damaged? Did any wires get pinched or otherwise shorted against the positive terminal or leads? Check all over that area to make sure all is well.
If you absolutely have to, you can pull the siren relay IF it doesn't disable your ignition too. AGAIN! I DON'T BELIEVE THIS IS A GOOD IDEA, but needs must as the devil drives.
If you disconnect it, get it into the shop as soon as you can. You don't want to be without your anti-theft system for long.
I wish you the best!

to stop at night you must cut the earth cable from siren, after that take the car at service to cek the wire and the contacts of alarm.

ck alarms system they come with seperate fuses also cicuit hooked to