[sexypizzaman]

Can I wire 2 relays in series to a 12volt ignition wire??

[Holder350]

yes....to have to turn on 2 separate switches together to flow current.

yes....to have one relay turn the other on...(don't know why.)

[DENCOUCH]

Relays are made double throw double pole. Why use two if you can get one that does the work of two.

Check it out

[carsavvycook]

You can hook up 2 or more relays using the same switch wired to positive or ground. Your power out of the relay just goes to what ever you want to turn on with the same switch.

This is common on dual electric fans along with a transmission cooler fan using 3 relays from the same switch.

Most of the off road race vehicles have multiple relays wired together for the lights, and multiple relays for the electric fans for the engine, trans, oil, etc., coolers.

This is my favorite link on wiring relays.
http://www.6066gmcguy.org/BoschRelay.htm

[T-bucket23]

Originally Posted by sexypizzaman

Can I wire 2 relays in series to a 12volt ignition wire??

What exactly are you trying to accomplish. If you mean run two relays off the same switch this is very easy. I dont know why you would actually want two in series. A little more info please

[machine shop tom]

You will probably get more answers in the electrical forum.

Moving..........

tom

[matt167]

if it's a GM, then there is an unfused ignition assessory spade terminal you can plug in to, you could just use that, or trigger the relays with it

[Holder350]

I just realized who this was asking the question.

[carsavvycook]

Originally Posted by Holder350

I just realized who this was asking the question.

That is Rude!!! What do you think the other members who read this are going to think of you now?

[Holder350]

I'm not trying to be mean but I'v been in a bad mood as of late.....all I was referring to was some of his past posts.....


Alternator not lining up, PICS!

Alternator Bracket Mounting SBC Help

and this one for sure

Pulleys Don't Line Up Sbc, Pics, Help!!

[carsavvycook]

Originally Posted by Holder350

I'm not trying to be mean but I'v been in a bad mood as of late.....all I was referring to was some of his past posts.....


Alternator not lining up, PICS!

Alternator Bracket Mounting SBC Help

and this one for sure

Pulleys Don't Line Up Sbc, Pics, Help!!

If you don't ask questions you don't learn, and like he posted #5 03-06-2008, 07:13 PM
sexypizzaman
Registered User Join Date: Mar 2006
Location: Vancouver
Posts: 186
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re: Alternator Bracket Mounting SBC Help

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Thanks a lot for the help guys now i can see how it goes!! And for you Holder350, if you don't want to help then don't say anything at all. Forums are for people WHO ARE LEARNING, for asking people with experience these questions and HOPEFULLY receiving some help. If you are just going to bash a thread why even post?? Why waste your time typing if all you have to say is garbage?? Don't know if anyone else agrees with me but I didn't think forums were for that.....

[Holder350]

lol I posted that because I thought it was a joke....

[oldred]

Do you mean in a series or parallel? I can't see any reason to use two in a series but if you want to double the current carrying capacity, for instance use two 30 AMP to carry 50 AMPs or so, you can do that by using two parallel and in fact some electric fans have this set-up, I think Painless wiring has one like that.

[Holder350]

thanks for that oldred.....I actualy needed this a few weeks ago and had to go with a expensive 100 amp unit for a alt shutdown relay....but about 4 little 30 amps would have worked just as well.....

*kicks self in but*

[carsavvycook]

Originally Posted by Holder350

thanks for that oldred.....I actualy needed this a few weeks ago and had to go with a expensive 100 amp unit for a alt shutdown relay....but about 4 little 30 amps would have worked just as well.....

*kicks self in but*

What kind of vehicle uses a 100 amp alt shutdown relay? This kind of relay would half to have at least 6 gauge wires in and out of it. Auto shutdown relays on the other hand, use smaller gauge wires and shut down the fuel pump, ignition, and fuel injectors. Never ever are they rated at 100 amp.