[Tigers] Horn Wiring

[Tom Witt]

I believe most horns have a relay and the 12v+ is already at said relay. 
When the horn ring makes contact it GROUNDS the relay (completing the 
circuit) and the relay contact points connect. That passes through the 
12V+ to the horns. So, typically the horn ring simply grounds the relay 
to activate it. Sorry too late for me to check the manual for Tiger 
specifics but MOST cars function that way.

  Think of yourself standing at a light switch in the house. When 
someone presses you on the shoulder (connecting to ground) you and the 
switch act like the relay moving the switch to the on position. This 
then send power to the light (horn). When the person pressing on your 
shoulder releases you turn the switch off. Hope that helps.


On 9/23/2023 5:59 PM, Robert Wanty wrote:
> I am working on wiring the horns for the first time since my 15 year 
> restore. I am working with the original wiring harness and horns. 
> Starting at the horns there is one on  each side with a jumper wire 
> between the two horns, there are 2 purple wires leading to each horn, 
> one wire on each side is hot and wired to the fuse box the second wire 
> is not hot or grounded. I installed a new horn ring from SS and have 
> one wire from the contact on the horn ring and a second wire for the 
> circle contact off the signal switch, I think the wire for the circle 
> contact should be hot  but I don't seem to have a connector for it in 
> the harness under the dash and nothing for the wire to the horn ring.
> It would seem to me that I should have a hot wire to the ring contact 
> then a hot to the horns when the horn ring is pressed. but the wiring 
> harness does not seem to follow that way of thinking.
> The wiring diagram is some help but as usual my limited knowledge on 
> this will probably start a fire.
> Any help would be appreciated, I would rather not rewire the circuits 
> so hopefully I can restore the Lucas system.to <http://system.to> its 
> original splendor.
>
>
> Bob
>
>
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