Make ELS click sound like Federal Signal beep?

I did some extra.Ivaud editing and recorded a 1 minute test video. The beep is very low, and I'm trying to amplify it without messing up the length of the audio. So far it sounds great, a little low but great.

the edited file is a gear change file, so sometime you will hear it when you back up, or when the AI go berserk and start backing up into things. but its barely heard unless I amplify the sound. I am now trying to find the audio the ELS control panel uses when changing patterns so I can replace that. I would also like to place the audio somehow on the siren as well so every time you hit the horn button, the beep comes up as well, but the horn idea would be impossible since there is no audio for that. unless some scripting is involved imo.

 

https://www.youtube.com/watch?v=obKKN_z54KQ

I think it sounds good when it is low like that. Kinda sounds like it comes from inside the car.