8th Generation Honda Civic Forum - View Single Post

bee-man · 04-19-2008, 10:30 PM

The link was very helpful. One wire means that the horn is active high (older Honda's were different). If simplicity is priority, follow the DIY link - Easiest, yes. Best, no. If you blow fuses, then incorporate the relay.

A knowledgeable installer would incorporate a relay for liability and performance - it isolates the airhorn from the car's main electrical system and avoids the skinny gauge factory wire for drive current. If you choose this route, just follow Figure C and connect relay terminal 85 to the horn wire, and connect relay terminal 86 to ground. That's it! When you press the horn, the relay will essentially make the connection from terminal 30 to 87... make sure you place the inline fuse close to the battery.

Also, if you plan to use the stock horn location, just know that you are likely violating instruction step #1. Oh, but I see you live in sunny San Diego.

Cheers.

04-19-2008, 10:30 PM	#9 (permalink)
bee-man Junior Member Join Date: Oct 2007 Posts: 29 iTrader: 0 / 0%	The link was very helpful. One wire means that the horn is active high (older Honda's were different). If simplicity is priority, follow the DIY link - Easiest, yes. Best, no. If you blow fuses, then incorporate the relay. A knowledgeable installer would incorporate a relay for liability and performance - it isolates the airhorn from the car's main electrical system and avoids the skinny gauge factory wire for drive current. If you choose this route, just follow Figure C and connect relay terminal 85 to the horn wire, and connect relay terminal 86 to ground. That's it! When you press the horn, the relay will essentially make the connection from terminal 30 to 87... make sure you place the inline fuse close to the battery. Also, if you plan to use the stock horn location, just know that you are likely violating instruction step #1. Oh, but I see you live in sunny San Diego. Cheers. Last edited by bee-man; 04-19-2008 at 10:32 PM.