Hi, I'm currently installing my own set of train horns. I've pretty much made my own kit by buying the parts here and there. But anyways, I have the horns, horn button, and airline all installed but am stuck on the relay part. I'm using the relay to make sure that the compressor doesn't turn on while the truck is off. What are you guys using to switch on your relay with? I know there are many hot wires when the truck is running and cold when its not, but what are you guys using?

Thanks, Rob

 

Which relay are you using?

Is it a combination Relay/Pressure switch?




Rick

 

No, it's just a regular heavy duty relay I picked up at a local auto parts store. I already have a pressure switch wired in.

Rob