Electronics > Beginners
Warning Horn Cutout
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Nusa:
Black simulates the existing circuit as you described it.

Add a lamp in parallel, in red. If it's an LED, include an appropriate resistor. Lamp operates whenever alarm is on. Easy.

Insert a latching relay with a mute switch, in red. Buzzer operates like normal by default. Push the button to energize. Remains energized until alarm condition goes away.

I think that's what you asked for.
floobydust:
I looked and the levelling jack controllers all have safety interlocks for the parking brake being on, transmission in neutral or park, adequate hydraulic pressure, not low fluid level etc. - or else they sound their alarm.

What make is the controller? Perhaps it is trying to say something instead of just being annoying.
Chuggs:
HWH is he mfg.

The noise is definitely there for a reason.  However, once you hear it...you don’t need to listen to it blast for the next couple of minutes.  There is a Green “Travel Mode” light that confirms the jacks are fully retracted.

If I can find it...there is another alarm I’d like to do the same thing with.  The air tank low pressure warning.  It sounds whenever the key is on with low air tank pressure.  It would be nice to cancel the noise while waiting for the compressor to fill the tanks. 

The thing I don’t want to do is to flip a switch and completely disable the alarm.  I respect the safety issues it’s designed to highlight...just trying to defeat the noise portion momentarily...and allow it to reset itself so that in can warn us of another occurrence.
ledtester:
Sounds like you want a relay timer circuit that works like this:

- Normally the relay is not energized.
- When you press a momentary push button, the relay is energized for some fixed amount of time (like 1 minute) and the de-energizes automatically.

You would connect this relay circuit in series with the buzzer. The buzzer is connected to the normally closed contact of the relay. Thus when the relay is energized the buzzer is disconnected from the circuit. This allows you to mute the buzzer for a minute at a time.

You can do this with a 555 - I'll try to whip up a schematic.

Alternatively, there are plenty of "relay timer" modules you can get which will energize or de-energize a relay for a certain amount of time, but you'll want one with a trigger signal like this one:

https://www.ebay.com/itm/163238492336

(title: "1-Way Relay Module DC 6-30V Delay Power-off Trigger Delay Cycle Timer Switch")
floobydust:
HWH 725: "NOTE: When the jacks are stored with the ignition in the ON position, the warning buzzer will sound until the jacks have retracted to the STORE position. 
If desired, the jacks can be stored with the ignition key in the accessory position.  This will eliminate the warning buzzer while the jacks are retracting."
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