Thread: Electrical Questions

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Originally Posted by Triker

OK---I am convinced that I need to use a relay on the horns.
I have a set of dual horns that are rated at 20 amps each.
Can I get away with 1 relay or do I need to use 2 relays?

Can someone point me to a SIMPLE wiring diagram for my 2 horns?

Relays, like most other electrical equipment have a rating as well. Most automotive relays are rated 20 to 50 amps. If your horns draw 20 amps each and you have two then you would need a relay rated above 40 amps. I would recommend going to 50amps to have some breathing room. Don't forget the fuse!!!! I looked up relays this morning and found this;

Automotive Relays | WiringProducts

50 amps for 13 bucks. Another 5 bucks for a wiring harness to make a very clean install as well.