Momentary button and fog lamps.

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the12volt

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Joined: March 07, 2002

Location: Louisiana, United States

Posted: February 26, 2003 at 7:20 PM / IP Logged

No, not at all. If your switch smoked, you definitely have something connected where it shouldn't be. Double check your configuration (wiring and connections) with my diagram, paying close attention to each terminal and lead connected to it.

Momentary button and fog lamps. - Page 3 -- posted image.

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pipes

Copper - Posts: 51

Joined: February 10, 2003

Location: Canada

Posted: February 26, 2003 at 8:04 PM / IP Logged

Are you going to be putting this in the special application section of relays? Just wondered cause it may help a few people. Just a thought Momentary button and fog lamps. - Page 3 -- posted image.

the12volt

Administrator - Posts: 3,955

Joined: March 07, 2002

Location: Louisiana, United States

Posted: February 26, 2003 at 8:14 PM / IP Logged

Yes, eventually I'll add that one and a few more. If I'm up to it and have the time, I'll add them this weekend.

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pipes

Copper - Posts: 51

Joined: February 10, 2003

Location: Canada

Posted: February 27, 2003 at 2:24 PM / IP Logged

It didn't work but have a question, the relays I have output from both 87 and 87a when the coil is energized, is this where the problem is?

the12volt

Administrator - Posts: 3,955

Joined: March 07, 2002

Location: Louisiana, United States

Posted: February 27, 2003 at 2:32 PM / IP Logged

You should only have output on one terminal at a time. Double check your connections. If I have time this evening, I'll bench test my configuration and let you know what I get. BTW, are you using SPDT relays? Make sure each relay has five terminals and that they are marked as I have shown in my diagram. If not, it will never work.

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pipes

Copper - Posts: 51

Joined: February 10, 2003

Location: Canada

Posted: February 27, 2003 at 2:45 PM / IP Logged

yes there is 5 terminals but 87 and 87a are both normally open. If this is the case what can I do I can't find any others then those type.

jrilla

Gold - Posts: 1,498

Joined: November 19, 2002

Location: North Dakota, United States

Posted: February 27, 2003 at 6:19 PM / IP Logged

I was looking that diagram over and it looks like it will have the same problem that the setup that I rigged up. I noticed that the momentary switch must be pressed for only a split second. any longer and the relays just chattered back and forth. I think this would not be a problem if you had a switch that snapped out the momentary connection instead of connecting the wires as long as the user holds down the switch. I will have to bench test this diagram too.

J Rilla

Owner/Installer

the12volt

Administrator - Posts: 3,955

Joined: March 07, 2002

Location: Louisiana, United States

Posted: February 27, 2003 at 8:22 PM / IP Logged

J Rilla, I see I have you thinking ;)

Yes, as I have it drawn it requires a very short pulse. By adding two more relays, a diode, a capacitor, and small resistor it works with long pulses and does not chatter back and forth, however as I understand it, the challenge is to only use SPDT relays :)

Sorry pipes, I don't have time to play with this tonight, maybe sometime this weekend. BTW, the price of a 1 latching relay and 1 SPDT relay is cheaper than 6 SPDT relays (and counting), smaller, and much less time consuming ;)

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jrilla

Gold - Posts: 1,498

Joined: November 19, 2002

Location: North Dakota, United States

Posted: February 27, 2003 at 8:42 PM / IP Logged

no smoke either

J Rilla

Owner/Installer

pipes

Copper - Posts: 51

Joined: February 10, 2003

Location: Canada

Posted: February 28, 2003 at 8:25 AM / IP Logged

If I could find a mechanical latching relay I'd be set but no one seems to sell them or even know what I'm talking about for that matter. This is quite the challenge though.

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