siren replacement problem - Toyota Nation Forum : Toyota Car and Truck Forums

CDub LXi · 10-22-2005, 10:44 AM

The siren on my alarm fell off it's post a while back and it got caught in the alternator belt... the siren was completely damaged and unfixable. I don't really care about the siren that much and want to just replace it with a piezo. I bought the piezo and hooked it up to the wires that the siren was originally on. The piezo chirps but it is barely audible... so of course I thought it might be a defective piezo. I hooked it up to the battery straight (pos+neg) and it worked loud as hell... so it's not defective. Why wouldn't the piezo work with the preran wires that the old siren worked on? I mean... it works but it is like a cricket chirp as far as loudness goes. Does a piezo draw more power than a regular siren?

How do I go about fixing this problem?

CDub LXi · 10-22-2005, 12:26 PM

So I've come to the assumption I need a relay. Single throw double pole with running positive constant to the battery or some other constant, then ground the relay, then run the piezo positive to the relay and the switching power on the relay to the wire that was running to the siren that was on the car originally. of course grounding the piezo too.

Sound right?

Anshu · 10-22-2005, 03:22 PM

yes sir

***cam2Xrunner*** · 10-22-2005, 05:18 PM

Quote:

Originally Posted by Big Body LX

So I've come to the assumption I need a relay. Single throw double pole with running positive constant to the battery or some other constant, then ground the relay, then run the piezo positive to the relay and the switching power on the relay to the wire that was running to the siren that was on the car originally. of course grounding the piezo too.

Sound right?

See I know a little bit about car audio, but I have no clue what you just said

Now I know what it feels like to be the noob

Anshu · 10-22-2005, 05:31 PM

this what ya want

remote would be the old siren cable
and the amps and fans would be the new siren

CDub LXi · 10-22-2005, 09:05 PM

Yeah I got it. I bought the relay tonight. thanks for the help

CDub LXi · 10-23-2005, 08:52 PM

How often do you get bad relays? I hooked it all up with the relay and it still doesn't work. I tested my ground, my constant, my remote, and my out to accessories and they're all good but no work.

Anshu · 10-23-2005, 09:26 PM

not sure on that one.
try taking it inside and testing with a 9v and a test light.

***Eye8Pussies*** · 10-23-2005, 10:55 PM

where did you buy your relay?

I'm looking for one locally, but radio shack (the source) doesn't carry one

CDub LXi · 10-23-2005, 11:36 PM

I got it at Radio Shack
http://www.radioshack.com/product/in...tId=2062477&cp

I'm gonna test it with a multimeter tomorrow at work to see if it's a bad relay... hopefully it is and I can just swap it out.