Horn relay?

markpenn1 · 09-20-2010, 04:08 PM

Does a 2006 Nomad have a horn relay? When I bought my Fiamm horn fom Aerostich they said I didn't a relay; relays mostly for scooters; etc. Do I need one? Horn is 12volt/10a--thanks!

cactusjack · 09-20-2010, 04:59 PM

I know you shouldn't install a Stebel horn without a relay, the stock horn circuit can't handle the load. But I think those draw closer to 20a. I don't know what the current draw for the stock horn is.

macmac · 09-20-2010, 06:21 PM

The stock horn runs direct off a 15 amp fused circuit, so I think a 10 amp horn will be ok with no relay.

i would try it, then really try it, by holding that horn ON and also holding the + side wire to it, feeling for heat.

If there is heat you need to wire a relay.

Yellow Jacket · 09-20-2010, 07:06 PM

According to the sevice manual wiring diagram, the stock horn is on a 10 amp fused circuit. (Fuse # 2 in the junction box.) It draws 4.0 amps.

If you're installing a horn that draws 10 amps you really need to wire it with it's own circuit fused at 15 amps and with sufficient size wiring. If you want to use the stock horn switch you need to use the switch to trigger a relay. You don't want to be running 10 amps through the stock horn switch or you will be replacing it soon.

macmac · 09-20-2010, 08:43 PM

Oops! I got that fuse mixed up with the fan fuse.

markpenn1 · 09-21-2010, 10:33 AM

thanks again!!!!

09-20-2010, 04:08 PM	#1
markpenn1 Member Join Date: May 2010 Location: Chandler, Arizona Posts: 95	Horn relay? Does a 2006 Nomad have a horn relay? When I bought my Fiamm horn fom Aerostich they said I didn't a relay; relays mostly for scooters; etc. Do I need one? Horn is 12volt/10a--thanks! Login or Register to Remove Ads
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09-20-2010, 04:59 PM	#2
cactusjack Mega-Contributor Join Date: Sep 2007 Location: Where it doesn't snow...ever! Posts: 21,926	Horn relay? I know you shouldn't install a Stebel horn without a relay, the stock horn circuit can't handle the load. But I think those draw closer to 20a. I don't know what the current draw for the stock horn is. __________________ Scott "Cactusjack" Hanks VBA #00105 H.O.G. #4250060 2011 H-D Ultra Limited 103ci :: 2011 HD Electra Glide Ultra Limited w/Stage 1 :: Rallies: Mesquite '08\|Custer '09\|Cortez '10\|Crescent City '11\|Kanab '12\|Antlers '12\|Estes Park '13\|Antlers '13\|Orofino '14\|The Dalles '17
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09-20-2010, 06:21 PM	#3
macmac Sr. Contributor Join Date: Apr 2008 Location: Tamworth New Hampster 06 1600 Posts: 12,484	Horn relay? The stock horn runs direct off a 15 amp fused circuit, so I think a 10 amp horn will be ok with no relay. i would try it, then really try it, by holding that horn ON and also holding the + side wire to it, feeling for heat. If there is heat you need to wire a relay. __________________ 06 1600 Nomad Just call me Mac molon labe come and get it
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09-20-2010, 07:06 PM	#4
Yellow Jacket Top Contributor Join Date: Nov 2007 Location: Fayetteville, Georgia Posts: 5,792	Horn relay? According to the sevice manual wiring diagram, the stock horn is on a 10 amp fused circuit. (Fuse # 2 in the junction box.) It draws 4.0 amps. If you're installing a horn that draws 10 amps you really need to wire it with it's own circuit fused at 15 amps and with sufficient size wiring. If you want to use the stock horn switch you need to use the switch to trigger a relay. You don't want to be running 10 amps through the stock horn switch or you will be replacing it soon. __________________ Bob KawaNOW/VBA 210 Green/Silver 2006 Patriot Guard Riders 2009
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09-20-2010, 08:43 PM	#5
macmac Sr. Contributor Join Date: Apr 2008 Location: Tamworth New Hampster 06 1600 Posts: 12,484	Horn relay? Oops! I got that fuse mixed up with the fan fuse. __________________ 06 1600 Nomad Just call me Mac molon labe come and get it Login or Register to Remove Ads
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09-21-2010, 10:33 AM	#6
markpenn1 Member Join Date: May 2010 Location: Chandler, Arizona Posts: 95	Horn relay? thanks again!!!!
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