Federal Signal TA

If I am not mistaken,the plug you have on there,should plug directly into a Smart Siren.Any ground switched arrowstick controller shoud work.Before we started using Smart Sirens,we used Code 3 controllers.
 
The middle pink and white, those are normally grey and purple on standard SMs. But, otherwise, any FedSig SM should work with it as long as it's negative switched.
 

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