Relay question

[Camarok]

It's not SHO specific, but.... I've been wondering how to get a negativly triggered relay to work in this fashion...

When the triggering voltage is taken away, i would like the relay to engage.... ie... ignition is turned off and a relay will engage, giving power to something. I believe it's possible. shrug

 

[pjtoledo]

Get a relay with normally closed contacts. Relays can be had with two or more sets of contacts. When the coil voltage is stopped a spring pulls the armature down/up/ sideways to close a different set of contacts. Radio Shack maybe?

Perry

 

[Camarok]

IC, yes that makes sence now you said it slap I think i'll have to go to the shack and look around, i just have like half a dozen relays they sell at auto stores, 1 contact thanks man

 

[philallemang]

I got them in my car right now......I just got 2 from a friend. They are neat little things.

 

[Tunez]

Any typical bosch style relay that you buy at an auto parts store can do this. Well, as long as it is the five prong relay. Hook-up would be as follows:

86 - Negative Trigger
85 - 12v
30/51 - 12v
87 - N/A
87A - Power out to accessory

87 is a normally open circuit and 87A is a normally closed circuit. When power is applied to 86 the relay 87 is active and when power is taken away 87A is active. You can switch 86 and 85 around as well but I have just always done it the same way as above.

 

[Camarok]

Tunez:
Any typical bosch style relay that you buy at an auto parts store can do this. Well, as long as it is the five prong relay. Hook-up would be as follows:

86 - Negative Trigger
85 - 12v
30/51 - 12v
87 - N/A
87A - Power out to accessory

87 is a normally open circuit and 87A is a normally closed circuit. When power is applied to 86 the relay 87 is active and when power is taken away 87A is active. You can switch 86 and 85 around as well but I have just always done it the same way as above.

Honestly I cannot find a 5 prong at any auto store round here....

 

[Tunez]

Go to Walmart near the foglights and you should find them there. They are a very basic realy that you should ba able to find all over the place. Go to the auto parts store and just ask for a Bosch relay. I would be very surprised if they don't have them at all.

The bottom looks like this:

The top/side looks like this:

 

[Camarok]

Tunez:
Go to Walmart near the foglights and you should find them there. They are a very basic realy that you should ba able to find all over the place. Go to the auto parts store and just ask for a Bosch relay. I would be very surprised if they don't have them at all.

The bottom looks like this:

The top/side looks like this:

Ya I know bout' the realys, i usually see 'em in the remote starters i've installed and other things, but honestly, i really cannot find them here, must me a Milwaukee thing
oh I'll find one sooner or later

 

[Rockledge]

I'm currently wrestling with a fuel pump circuit problem, so I've been thinking a little bit about relays myself lately. I came across this informative PDF describing the basics of relays, including the standard 5-prong, so you might find it interesting or helpful: Understanding Relays

P.S. I saw a standard 5-prong relay on the shelf at AutoZone about a week ago for $3.99.

<small>[ January 30, 2004, 02:11 PM: Message edited by: Rockledge ]</small>

 

[Camarok]

Rockledge:
I'm currently wrestling with a fuel pump circuit problem, so I've been thinking a little bit about relays myself lately. I came across this informative PDF describing the basics of relays, including the standard 5-prong, so you might find it interesting or helpful: Understanding Relays

P.S. I saw a standard 5-prong relay on the shelf at AutoZone about a week ago for $3.99.

Thanks for the tip Rockledge on the pdf file it helps thumb but i really think it's a wisconsin thing... I really cannot find them.

 

[SHOZ123]

I have a bunch of them if you want me to send some to you.