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horn relay
Posted: Sun Sep 25, 2011 6:39 pm
by twist
I am wanting to put duel fiam horns on my '77 R100. It has a single horn now. Do I understand correctly that I need to use a relay if I'm going to do this? Why does it need a relay? Can I make a relay from existing parts or do I need to break down and buy one, (or is it just easier to buy one)?
Re: horn relay
Posted: Sun Sep 25, 2011 6:45 pm
by George Ryals
Two horns draw too much current for the horn button. You can but a 30 amp 12 volt relay from Radio Shack for less than $10.
Re: horn relay
Posted: Sun Sep 25, 2011 7:13 pm
by Deleted User 287
George Ryals wrote:Two horns draw too much current for the horn button. You can but a 30 amp 12 volt relay from Radio Shack for less than $10.
$7, in fact.
http://www.radioshack.com/product/index ... Value=SPST
That is where I bought mine.
Re: horn relay
Posted: Sun Sep 25, 2011 7:24 pm
by twist
that answers that question! AS far as installation, where can I find diagrams for hook up?
Re: horn relay
Posted: Sun Sep 25, 2011 7:59 pm
by Chuey
I bought my horn relay from Rider Wearhouse (Aerostich guys). They came with a diagram. I'm hopeless with electrical stuff so I really needed it. I attached my relay right in front of the starter relay which on my bike, is on the left very near the front under the tank.
Chuey
Re: horn relay
Posted: Sun Sep 25, 2011 8:20 pm
by Deleted User 287
Chuey wrote:I bought my horn relay from Rider Wearhouse (Aerostich guys). They came with a diagram. I'm hopeless with electrical stuff so I really needed it. I attached my relay right in front of the starter relay which on my bike, is on the left very near the front under the tank.
Chuey
Damn! and only $4.00!!!
http://www.aerostich.com/prevent-or-rep ... relay.html
"12V, 40A Bosch-type relay for use with high amp draw electronic accessories like big driving lights, extra loud horns, double sided arm jesters, etc. Waterproof sealed plastic housing with metal mounting tab. Includes installation and wiring instructions. 2.125” x 1 x 1.25"
And don't test your horns inside your garage without hearing protection.
Re: horn relay
Posted: Sun Sep 25, 2011 8:22 pm
by Deleted User 287
You might consider one for your headlight while you are at it. It is said to increase handlebar switch life AND headlight brightness!
Re: horn relay
Posted: Sun Sep 25, 2011 10:13 pm
by Chuey
Man, it's like you need a relay for everything!
Chuey
Re: horn relay
Posted: Sun Sep 25, 2011 11:10 pm
by Deleted User 287
Chuey wrote:Man, it's like you need a relay for everything!
Chuey
They are like satellites...
Re: horn relay
Posted: Mon Sep 26, 2011 12:25 am
by robtg
My way of dealing with horns and their relays for the last 50+ years is throw the goddamn things in the bin.
The idiots in their insulated cages on the phone, music cranked to the max, or other distractions are not going to
notice.