I replaced my central locking vacuum pump recently, but my alarm won't sound when I try to press the panic button on the key FOB, OR when I lock the car from the inside and open the door; NOR will the exterior lights flash.

I hear a sound coming from the new pump when I try to activate it by locking the car from the inside and opening the door, but no alarm sounds.

Everything else is fine, and the tow light on the dash is finally blinking red.

I also replaced the alarm recently, so I doubt that's the problem.

Any advice? Thanks in advance!