Hi there, I have a PS-3155 remote start on my truck and the horn chirp timing is way too long, seems to chirp for a full second and the horn is loud. I would like to shorten up the length the horn chirps, can anybody explain how I do this?
I see in the user manual that the length can be set from 5ms to 200ms but it does not say how to change it.

Any help will be greatly appreciated.

Thanks,
Vince