Car Alarms: Door Locks not working after Alarm installed, door switches, set ups

Question
I have a 2000 Ford F150 and I installed an aftermarket alarm from Crutchfield. Everything worked fine for a while but now I have a problem with the electric locks not working. I even disconnected the alarm from the lock circuit and I still have issues with the locks working with the door switches or the factory remote. Is there a relay that I may have fried or are the actuators in the door damaged?

Answer
It's to say for sure without first hand inspection,
but start with the master fuses. Replace
the one you toasted, and then you will
need relays and fuse for the door locks.

The set ups are as follows:
Negative pulse, type 'B', on keyless entry models.
Five wire, type 'C', on non-keyless models,
mastered from the driver switch.

See wiring applications at relayhelp.com

Try again, and good luck with it.

ALARMTEK