Re: Horn wiring
Early horn circuits were simply a connection to a battery source, and other side to a switch, usually a horn button or ring on the steering wheel. Horns draw a lot of current, so a relay was added. This produced a side effect of creating a slight shock from the collapse of the relay coil to tingle the user. Then a resistance wire was added to reduce or eliminate the shock. Next to the starter, the horn(s) often draw a a heavy current.
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