Unitrol 90 Digital Siren Amp

[tiki_dood]

I am setting up a Unitrol 90 dual amp system, working from an Omega 9000. I can't seem to figure out how to operate the airhorn outside of the siren sweep. According to the Fed.Sig. docs on this amp is states "An additional momentary switch can operate the electronic Air Horn." But I can't find a wire or pin or anything to tie in a switch to an air horn function.


Any ideas?

 

[dmitry103]

There are two bundles of yellow harness coming from the 9000. If you look over each wire, you can see fine print labeling each wire's function, I believe. I don't have a unit in front of me right now, but I'm pretty sure that one of those is for remote A.H.


Most of them are for aux. switches on the unit.


Let me know.

 

[tiki_dood]

Yeah, I went through all of them already. None of them are listed for an AH function. Thanks for the tip though.

 

[shues]

Supply pin 3 on the 14-pin connector with ground to activate the airhorn. It's apparently the brown wire inside the 14-conductor cable.


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