Relay wiring diagram to switch ground with switched hot

[billforbush]

Im trying to activate the functions of a Federal MS400U siren (which uses switched ground for each function), with a switched hot circuit. Could someone please advise where each wire would go on a relay so that when the hot switch is energized, the relay outputs a switched ground signal? Thank you very much.

 

[shues]

Connect ground to pin 30 and pin 85.

Connect switched +12v DC to pin 86.

Pin 87 is your ground output.

Credit: the12volt.com

 

[billforbush]

Shues thank you so much. That’s exactly what I needed. Really appreciate your help