wireless momentary switch wiring
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Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=128828
Printed Date: May 15, 2025 at 9:50 PM
Topic: wireless momentary switch wiring
Posted By: handon11
Subject: wireless momentary switch wiring
Date Posted: October 12, 2011 at 8:44 PM
I think I'm probably just overlooking something simple, but I cannot figure this switch out. It will be wired to a solenoid for an air horn, which has the neg. grounded already, and the pos. is ran up underneath my seat. My question is: I have 5 terminals on my switch circuitboard, and I have the obvious batt.+12v and the obvious ground, and the relay throws, so it is good. It's a N.O./N.C. switch. please help? There is a diagram I will attach.. (please be nice. lol)
Replies:
Posted By: handon11
Date Posted: October 12, 2011 at 8:45 PM
Sorry, I'm looking to wire the 3 on the left (no, com, nc)
Posted By: oldspark
Date Posted: October 13, 2011 at 2:11 AM
So + & - go to +12V and GND to power the wireless circuitry (receiver).
You then connect your horn thru Com & NO (Normally Open) which then close (join, connect) when the "wireless" is triggered.
The Com & NO can be inserted on either side of the horn - ie, +12V side, or GND side (but NOT one to each!), just make sure the contacts are rated to handle the horn's current.
If not, use it to trigger a relay that powers (or GNDs) the horn.
Posted By: howie ll
Date Posted: October 13, 2011 at 10:00 AM
Where does wireless come into this? And why does the switch have a - connection unless it's illuminated.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: handon11
Date Posted: October 13, 2011 at 11:48 AM
Alright, I'll try it with a relay. i tried wiring it just straight to the solenoid with COM and NO and nothing, so I'm guessing it isn't letting enough power though to the solenoid. Thank you, I'll post back later after I find time to actually try this.
And I'm not sure Howie if I understand all the technicalities to it, but I wired the +12v and GND and used the remote, and sthe relay inside threw, so I can hear it. i'm just not sure I understand you question?
Posted By: oldspark
Date Posted: October 13, 2011 at 4:13 PM
I'm worried that if you powered the (horn) solenoid direct, then you have blown your switch contacts, else an internal fuse.
That assumes the solenoid current is higher than the relay's rated current.
Posted By: howie ll
Date Posted: October 13, 2011 at 4:21 PM
Oh for Lords sake, go to radio shack and buy a momentary push switch for a dollar, ground (0v) to switch to 85 on the relay, 12v+ constant, fused at 20amps to 86 and 87, 30 to the + on the horn solenoid and - on the solenoid to ground (0v).
Bloody job done goodnight.
-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
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