first alarm 03 cavalier

Long story short...I've never installed an alarm before, and I'm looking for any hints/tips/suggestions to help me do this. I already have the wiring diagram that I got from an old post.

I have a Viper 5002, with a 506T audio sensor, a hood pin switch, and a 515R Battery Backup Siren. I don't have remote start, there's no power windows or doors, but my car does have a trunk release button. Here's my list of questions:

1) What's the best place to put the mic for the 506T in my car, or any 2dr car for that matter? Also to set the sensitivity, does tapping keys on the window really work that well (like indicated in the instructions)?

2) Can I just splice my second siren (the 515R) in with my main siren when I hook it up? (I was thinking one under the seat, one in the engine bay).

3) How do I set the shock sensor; ie, is there a given methodical way to do it? Or do I just play with it til I think it's good?

4) What's the best way to tap into my car's wires, connection-wise? Vampire clamps, butt splices, crimp caps, t-taps, etc.? I know soldering would be optimal, but I'm not sure I want to spend that much time under my dash in one day.

5) In the near future I will be adding power locks (524t) to my car...how easy is it to tie them in if the alarm is already installed?

6) The wiring diagram I got for my car from this site's database says that my trunk release (-) is at the actual switch in the trunk. I'm guessing this is just a normal ground like any other cause the button is just a simple momentary pushbutton switch. So then I can just ground out this lead at the brain, correct?

7) How do I wire up my hood pin switch? A quick wiring diagram would be great. It's a normally closed spring loaded switch if that helps.



Sorry it's a long list, but I'd rather gets options/opinions before I start this. I do have a friend who is a professional installer and does alarms like there's nothing to them, so I'll be picking his brain too. Unfortunately he's never available to actually help with installs.

Thanks a lot in advance guys.

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2003 Chevy Cavalier coupe

1. Centrally located in the vehicle between the two doors. A center console is usually a good place. They work off of sound waves so its better not to cover them up. This is to detect anyone trying to use a slimjim or metal on glass (center punch) to shatter your windows. This usually is not enough to set of the shock sensor (if it is you will have many of sleepless nights if you live on a high traffic road)

2)Yes you can just splice into your main siren

3). Theres no tried and true method depends on the vehicle usually pounding with a fist on the door pillars (this approximately simulates the force needed to peel your lock)

4). I use T-taps accept for power wires on remote starts.

5). Easy, the hardest part is getting the actuators in the sweet spot and the linkage just right. you will need the negative or ground siting relay diagrams found on this site. (click on the relay link at the top of the page).

6)According to my information your trunk release is positive BLACK/ white located at the BCM (Body Control Module). Your trunk TRIGGER is negative and is ORANGE / black located at the BCM

7). Hood pin switch is easy the pin will ground itself through the body where its mounted (if its mounted through metal) Mount the hood pin in a place that is inside of the rubber gasket you don't want leaks and it will help prevent the pin from rusting. Simply connect a single wire to the tail of the pin switch and connect that to the hood pin wire from the alarm. When the hood is closed the pin and contact will be open. When the hood opens the spring will force the contacts together grounding the wire.

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Thank you for your reply.

1) I think I've got a good location for the mic now...it'll be in front of the center console on the outside of my dash piece (the dash extends to the floor right there without actually connecting to the console, so it'll be hidden between the two, but in open air).

2-5) awesome and thank you

6) This is exactly what I needed. Now when look underneath the dash I know what I'll be looking for.

7) again, awesome and thank you.

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2003 Chevy Cavalier coupe

Another thing...my brain's wiring diagram has a wire for retained accessory power, and I already get what that is, but do I connect that to my primary or secondary accessory wire or both?

For the trunk, I would then connect the ORANGE / black trigger to "(-) Instant Trigger Input (trunk input/shunt), Zone 1" on my brain, and the BLACK/ white release to "(-) 200 mA Channel 2 Output" on my brain (it says in the note below that this is most commonly used for the trunk release)? I understand that the Channel 2 Output can control anything, but this is by default programmed to the * button on the remote which is the one I want to use for my trunk.

Sorry I'm asking a lot of questions, like I said, this is my first install, and already you've added/corrected the info I've found so far (no other diagram had the trunk trigger wire in it).

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2003 Chevy Cavalier coupe

For the accessory wire I am not sure I can't find a manual online if you could post the description I can give you a definite answer. Yes on the trunk trigger and yes on the trunk release just remember to use a relay for the trunk release since its positive and you alarm has negative output.

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Ok good deal on the trunk release...I gotta run to radioshack to get some diodes anyways...how many amps does that need to handle? A 1amp relay should handle it just fine, correct?


Here's a better description about the accessory stuff:
I already have Retained Accessory Power in my car (I have a Class 2 harness). Do I need to hook up my brain's RAP wire to my accessory in order to keep this? Or is that wire on the brain just there to add RAP? And if I do need to hook it up...my car has a primary and secondary accessory wire, I believe I would need to hook it up to both (I remember reading this on a cav forum a while back with someone else that was having issues with their alarm).

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2003 Chevy Cavalier coupe

After researching It is my understanding that the wire is to add RAP to an older vehicle that does not have that feature. The alarm can achieve this by supplying power once ignition 1 is turned off and removing power once the door trigger is activated. You do not need to connect this wire. For the relay I could never find what I needed at Radio shack. You can get them HERE this is where I order my parts from. You may be able to find them at an auto parts store there usually in the lighting department. You can use an SPST or SPDT relay. There is a less expensive model down the page for 1.69 that works great. You can get T-taps there as well.

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How many amps does the relay need to handle?

The only other thing I need to figure out is my parking light flash...my diagram for my car doesn't show whether my parking lights are positive or negative.

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2003 Chevy Cavalier coupe

Around 10 amps. and the wire is BROWN / Positive and found at either the switch or in the drivers kick

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Awesome...you've been a ton of help, thank you so much. The alarm itself should be here tomorrow and I'm getting the rest of my various parts today (diodes, relays, connectors, etc).

I'll most likely install it next weekend. I'll post if I have any more questions.

Thanks again.

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2003 Chevy Cavalier coupe

You DONT want to use the BLACK/ orange wire for the trunk release. You want the BLACK/ white wire. I know this because I have an 02 cavalier and know every single wire you need to look for. If you cant find the wire at your bcm, you can also pull off the door trim piece at the floor (drivers side). There is a bunch of wires taped up (my tape is orange). Remove the tape and look for a BLACK/ white wire. The only problem is that there is more than 1 wire that looks like this.

noobie4life wrote:

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You DONT want to use the BLACK/ orange wire for the trunk release. You want the BLACK/ white wire. I know this because I have an 02 cavalier and know every single wire you need to look for. If you cant find the wire at your bcm, you can also pull off the door trim piece at the floor (drivers side). There is a bunch of wires taped up (my tape is orange). Remove the tape and look for a BLACK/ white wire. The only problem is that there is more than 1 wire that looks like this.

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so use a DMM and TEST.

sneakycyber wrote:

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6)According to my information your trunk release is positive BLACK/ white located at the BCM (Body Control Module). Your trunk TRIGGER is negative and is ORANGE / black located at the BCM

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I covered that already

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It went in without any issues. Thanks again for all the help.

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2003 Chevy Cavalier coupe

Great. Glad We could help

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Only thing left is to put in the hood pin switch, but I need to fab up a mount for where I want to put it. I'll probably do that Tuesday in the machine shop.

And of course now I need to program the remote features...that's gonna be fun. Thank god for instruction manuals...

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2003 Chevy Cavalier coupe

Ok, so I found an awesome deal on some door lock actuators today that I couldn't pass up. They're the DEI 524F ones, and I grabbed two of them (both doors). Now here's my question...how do I wire them up? The actuators didn't come with any wiring diagrams or anything like that, so I'm lost right now...it just came with mounting/installation instructions. Again, I have a Viper 5002 if you have access to Directfax or something along those lines.

I have 5 wires coming off of each actuator:
Brown, White, Black, Blue and Green.

There's 6 pertinent wires coming off of my Door Lock Harness from my brain (the Violet and Violet/Black are common at an inline fuse holder):
Violet - Unlock #87 NO (Input)
Blue/Black - Unlock #30 Common (Output)
BROWN / Black - Unlock #87A NC
Violet/Black - Lock #87 NO (Input)
GREEN/ Black - Lock #30 Common (Output)
WHITE/ Black - Lock #87A NC


Thanks again for the help.

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2003 Chevy Cavalier coupe

I was looking at it some more and I came up with this possibility:
Actuator / Harness
White    -> WHITE/ Black
Blue     -> Blue/Black
Green    -> GREEN/ Black
Brown    -> BROWN / Black
Black    -> ground

Then tap violet and violet/black from the harness to constant +12V.

Does this sound right? Sorry for the multiple posts...I'm tired right now.

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2003 Chevy Cavalier coupe

I can't find schematics anywhere and it appears no one else can either. The easiest way would be to cap off all but the green and blue wires and connect the to the alarm like this. Violet and Violet with black connect to Constant 12v. The brown with black and the White with black connect to ground. The Blue with black connect to the blue wires from the actuators and the GREEN/ black connect to the green wire from the actuators.

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Ok cool. I just called DEI, too, and they said I only use the green and blue off of the actuator, just like you said.

And I was looking at the "Actuators/Reverse Polarity" diagram on here, and it's exactly the same as what you said. It all makes sense now (helps that I slept some, lol). Btw, the guy at DEI said that the 5-wire harness off of the actuator is for use to interfacing into a central locking system...mainly used for factory replacement.

Thanks again. I'll probably have these in later this week, along with the hood pin.

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2003 Chevy Cavalier coupe