Air Horn Questions - 986 Forum - The Community for Porsche Boxster & Cayman Owners

rick3000 · 07-21-2009, 08:16 AM

Thanks, I completely under stand how to wire this in now.
I am going to be running a wire from the 12V phone connector to the front bumper for some custom running lights.
Do you think I could use this power source or would it draw to much power? If it does draw too much power how would I go about tapping directly into the battery?
Thanks!

rick3000 · 07-22-2009, 06:29 AM

"I am going to be running a wire from the 12V phone connector to the front bumper for some custom running lights.
Do you think I could use this power source or would it draw to much power? If it does draw too much power how would I go about tapping directly into the battery?"

Does anyone know how I would tap into the battery or if I would need to?
Thanks again!

Lil bastard · 07-22-2009, 06:58 AM

Quote:

Originally Posted by rick3000

"I am going to be running a wire from the 12V phone connector to the front bumper for some custom running lights.
Do you think I could use this power source or would it draw to much power? If it does draw too much power how would I go about tapping directly into the battery?"

Does anyone know how I would tap into the battery or if I would need to?
Thanks again!

I would suggest running the horn direct from the battery. It's fairly simple. You want to wire the battery to the input terminal of the relay (#30/51), the air horns to the output terminal of the relay (#87). Then use your OEM wiring to trigger the relay by wiring it to the trigger terminal (#86). Terminal #85 is a common ground.

Use a med. gauge wire (16 Ga would be good) with an 'O' ring crimped on one end, add an inline 15 Amp fuse to the wire and a female spade connector on the other. Slip 'O' ring through the bolt on the pos (+) battery cable terminal and attach the spade connector to terminal #30/51.

Here is a page that will help. It specifically wires in an aftermarket air horn (though for another vehicle) : Air Horn Relay

rick3000 · 07-22-2009, 07:04 AM

Thank you, that is exactly what I needed to know. I'll post back when I get this done in the next few weeks.

Lil bastard · 07-22-2009, 09:42 AM

In fact, to make a proper job of it, I'd add a relay holder, connect all wires to it and then insert the relay. This way, when the relay needs changing it's a much simpler procedure and your installation will look more professional for very little money. See them here:Relay connectors