Installing an additional horn?
Hello,
I plan to install an additional horn in my car which is connected to a lever via a relay.
When this lever is activated and I press my normal horn, the additional horn also honks.
The question is: How much output power can I connect to the additional horn, since it is connected to the switch and the original horn via a relay?
I don't know how much power I can draw from the cable, since the additional horn would draw around 600 watts and I don't know if all the components can withstand this load.
I would use a cross-section of 6mm² for the cable from the compressor to the relay.
Is this possible or what is the best way to connect it?
For circuit diagram see "Screenshot".
thanks in advance
(1 votes)
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Hello DanielX93
If you connect the switch to + from the relay and take off the battery feed from + and clamp it to the relay input (where the switch was clamped) you have full power at the additional horn. It would be important to have a fuse in between for the additional horn.
Greetings HobbyTfz
If the auxiliary horn actually pulls 600w, that is then 50 amperes, the relay and the cabling should be designed for this current intensity. The 600W mentioned are very high to me.
I think that must be enough!
Otherwise, I could also share the horn to 300 and 300 watts, but I want all of this over the hup button with which I operate the normal car horn.
I’m just thinking where I need a larger cross-section.
Because I think the supplementary horn takes the power from the car battery directly and hopefully not from the original horn.
If you’re not sure, take 8mm^2. You should not use permanently or often, because the battery is quickly empty. At 12 V, this is in order