Viper 791 Alarm Update

Okay, so I finally had my Viper791 installed by a shop everything works but when the hood goes off, the remote is indicating that the trunk has been breached, not the hood. So I called the shop and the guy said that the reason why that is is that both the trunk and the hood share the same line/connection. So even if the hood is breached, because there is only one line going in, it reads trunk on the remote. Is this true? Does other people's read both trunk and hood depending on which one is breached or does it only read trunk/hood? Help!?!

I have the same alarm and mine does the exact same thing

Hey StealthModifier, thanks for letting me know. Yeah, I tried a whole bunch of stuff and everything just kind of happened the same way. So yeah.... :o/ I was just curious though....is your hood trigger just sticking out? Because mine is in a weird position and looks ugly. I want to "put" it somewhere else. Hehe It's not too big of a deal but yeah....

Hey StealthModifier, thanks for letting me know. Yeah, I tried a whole bunch of stuff and everything just kind of happened the same way. So yeah.... :o/ I was just curious though....is your hood trigger just sticking out? Because mine is in a weird position and looks ugly. I want to "put" it somewhere else. Hehe It's not too big of a deal but yeah....
WRONG! That's the problem with some of these installers/shops. Let me guess, you guys went to a big chain store right???? Anyhoo, The small 5 pin connector slot h2/3 is a gray wire. It is suppose to be hooked up separately to the hood pin switch so it will either trigger the alarm or keep the remote start from working. It is really more meant as a safety feature so it won't start with someone's hands down the motor. More than likely the installer(s) were lazy and just twisted the hood and trunk wires together to the blue wire on the main harness. I mean, why would DEI show a hood on the remote if they didn't plan to use it???? :lol2:

i cant see the hood trigger on mine

Actually no, I didn't go to a big chain store. I went to a local shop that was privately owned. Damnit....

StealthModifier, I actually meant trunk trigger, NOT hood trigger....my badd.

ponchonutty, my trunk trigger is all ugly because it's just out in the open. Is there any way to hide it?

no prob...

ponchonutty, I'm looking at the Installation Guide right now and for the hood trigger, do you mean the 5-pin connector H3/2 is for the hood, not H2/3? Because H3/2 says hood but H2/3 says "Programmable Channel 4 Output." Also, if that's for the hood trigger then which one is for the trunk trigger? Because I can't find it anywhere. I thought I saw it last night but I can't find it right now. Ugh!

Okay, is the Blue H1/6 the trunk trigger? In the guide the H1/6 says it's supposed to be "multiplexed input, zone 4" but I looked in the back and it says trunk trigger so I'm assuming that's the one, right?

Whoops. Yes, the H3/2 is the trigger wire you need which is a gray wire. It should be used anyway as the safety shut down wire for the remote start. I am not sure why no one had used this. It use to be only for the remote start function but since DEI changed to these new systems, they made it for both remote start and security functions.

Slade, it all depends what kind of trigger they used. I usually use a mercury tilt switch because it is the most tried and true type of trigger. However, depending on the car I might try a magnetic or pinswitch instead.

Stealth, sometimes the installer just doesn't hook one up. Hopefully they did and hid it well. Or, maybe your car has a factory trigger that they patched into.

Hey ponchonutty, thanks for replying. I called the guy this morning and he said he'll check it out and get back to me. He told me to call him back at 4. :screwy: I'm thinking he's going to end up saying that he's right and won't want to redo it.... Ugh!

So yeah, ponchonutty, if he doesn't redo it then do you think you could kinda like "walk" me through how to fix up the connection. Right now I'm kinda assuming the the hood trigger wire and the trunk trigger wire are all rowed together into the H1/6 Blue for the trunk. So do I just cut the hood trigger and roll it up with the H3/2 Blue wire and that's it? I just don't know if I could find the wires because I don't have those volt meter stuff.... Oh wait, what if it was tapped into the hood? Ugh....this is frustrating...

As fas as the trigger switch for my trunk goes, the guy used the one that came with the alarm system. It's just really ugly and just sticking out in the trunk (with a PINK connection). And yeah, our cars came with the hood trigger already so he just tapped into it I guess....so that's why Stealth doesn't see his hood trigger. He tried finding the trunk trigger without having to put one up but he said he couldn't find it. I know I have one though because with the factory alarm, if it's set and if someone opens the trunk, it goes off. He just couldn't find it I guess.....

hey slade781, is ur alarm sensitive? i mean will it go off if u were to hit the sd of the door?

Actually no, it's not too sensitive. I'd have to kick my tires, hit the front window once or twice for it to go off. But there was this one time when my car was parked outside and someone drove by with really loud music and probably an exhaust of some type that set it off. So I don't know.... Is yours sensitive?

not at all. i can push up a down on the back an it wont even go off.... but u have to hit the door really hard for it to go off... nowhere else will make it go off

i know theres this sensor on the inside of mine i can turn to make it more sensitive but im not sure which way i have to turn it

I couldn't find the turning thing on mine...I think maybe the guy mounted it with the sensor turned towards the metal piece so I can't get to it... But umm, try hitting your window above your dash. I think that should set it off. Also, if you close your doors then it'll go off too (mine did when I didn't have the door trigger stuff rigged yet).

I just spent 2 hours by the phone waiting and trying to get a hold of the guy at the shop.... :mad:

u know i was messin with mine earlier... had the window down an turned on the alarm... an pull the latch for the hood an opened the hood.. an it didnt even go off.. but when i pull up the rear hatchback.. it goes off an says the door is open

GEEEZZZ You all are scaring me of all these half butt installs.

Yes, if you find the 2 wires you can separate the one and connect it to the gray wire. These are all neg. triggered so keep that in mind.

Also, these alarms have self checking features when you arm them. So, if you arm it and quickly start tapping on it, the alarm will not sound. It will only go off after it has been set and everything is quite. You can not set the alarm off by rocking the car at all. The shock sensor is tuned to "listen" to certain frequencies like that of someone busting a window or knocking out your locks.

There is no way an alarm should show your doors are open if you open the trunk or anything else. If you trigger the hood, the hood should show. Also, if you have it remote started (if you have it) it should not start or stall if RS after you open the hood.

ill have have to try later if it will remote start with the hood open

StealthModifier, yeah, with the 791, if I pull my trunk the alarm doesn't go off either. It doesn't go off until I open the trunk which releases the trigger. With the factory alarm though, it does off as soon as you pull the latch.

ponchonutty, this time it isn't my fault. LOL I took it to the shop and had it "professionally" installed. And I don't know what the "negative trigger" is supposed to mean. :( I looked under the dash today and damn, I thought that I could probably trace what the guy did but it was so bunched with wires that I should probably not mess with it because I might end up doing more harm then good. Hopefully I can get a hold of the guy because if not then it's gonna be a waste of money....

see i can pull the latch and open the hood all the way up an it wont go off.. but say i left the hood open an went to turn the alarm on.. the control beeps an the hood icon blinks

Hmm....that's kinda weird.... Because it sounds like the trigger is connected because the alarm recognizes it when it's open and it's trying to arm...but I don't know why it doesn't go off when it's triggered. Hmm....

i dont understand why it wont go off.. it did sometimes b4 if i would just pull the latch.. or is it i gotta wait a certan amount of time to pull the latch?

I don't know if this will work but if the alarm has tripped before then I think you have to reset it. Just put your key in the ignition and turn it twice and then off again. This should reset the system. Then arm it and try pulling the latch again. And yeah, you should wait until the remote isn't blinking "arm" anymore before setting it off. Let me know if that worked or not.

Remember to wait for about 10 seconds after you arm it before trying to trigger anything. If you don't, it will ignore that trigger. If it is bypassing any triggers, you should hear another beep a few seconds after you arm it.

One thing to mention is that most shops do not hook anything up other than what they see fit. Then they try to get more $$ to hook up hood or trunk triggers. Personally if the vehicle already has them and I do not need any parts, I hook them up. Either way I always inform the customer.

Slade, don't be too scared to look at the wiring unless the guy did a half butt job. Just carefully trace the wires away from the alarm brain.

Yea i just armed it an waited bout 20 seconds.. then pulled the latch an the alarm went off instantly

Yea i just armed it an waited bout 20 seconds.. then pulled the latch an the alarm went off instantly
At least they got that right :sly:

hah, yea ive had it back at least 3 times..they actually had to replace the computer cuz the alarm kept going off an the remote wouldn't stop it

So my buddy from SoCal just called and he said his shop would install my alarm for $50 as opposed to the $230 INCOMPLETE install I received!!! Damnit...I just got screwed over and then some.

Okay ponchonutty, I need your help. So I finally got a hold of the guy and he said that the H3/2 Gray wire is only for the remote start. I don't have the remote start hooked up so he said that the icon wouldn't light up/work even if it the hood pinswitch was connected to it. Is this true? If we connected the hood trigger wire with the gray wire H3/2 wire will it show hood or will it only show the hood icon if the whole remote start was installed?

On page 25 of the installation guide, it says:
"It (the H3/2 gray wire) will also trigger the security system if the hood is opened while the system is armed and report Zone 1." Do you think it will still do this without the remote start installed?

Stealth, do you have remote start hooked up in yours? Is your car auto or manual?

hah, yea ive had it back at least 3 times..they actually had to replace the computer cuz the alarm kept going off an the remote wouldn't stop it
99% of the time that's due to them coiling the antenna wire up in a pile. DEI instructs the installer to run all the slack out instead.

Okay ponchonutty, I need your help. So I finally got a hold of the guy and he said that the H3/2 Gray wire is only for the remote start. I don't have the remote start hooked up so he said that the icon wouldn't light up/work even if it the hood pinswitch was connected to it. Is this true? If we connected the hood trigger wire with the gray wire H3/2 wire will it show hood or will it only show the hood icon if the whole remote start was installed?

On page 25 of the installation guide, it says:
"It (the H3/2 gray wire) will also trigger the security system if the hood is opened while the system is armed and report Zone 1." Do you think it will still do this without the remote start installed?
That installer is trying to blow you off. Of course it will work. You just read it didn't you??? That's the wire you use if you bought the other 2-way system that's just an alarm with no remote start. To test this, find that wire and put it to ground and see what happens. If you ground it out then set the alarm, you should here another beep and the hood icon will light up.

I meant to say that's the same wire you use with the other alarm....

I've been waiting for you to come online the whole day. LITERALLY!!! Hehe Okay, one last question....just because I have it hooked up it won't turn off the car when I open the hood right? That shut off is only if the remote start is hooked up right?

yes i have remote start.. and its an automatic

I've been waiting for you to come online the whole day. LITERALLY!!! Hehe Okay, one last question....just because I have it hooked up it won't turn off the car when I open the hood right? That shut off is only if the remote start is hooked up right?
correct!

Okay, so FINALLY I got the guy to redo the wiring and everything's fine now. Had to go The City to do it but at least it's over with now. Hehe :biggrin:

Glad everything worked out for ya

Thanks Stealth and ponchonutty for all the help. :biggrin:

no problem :)