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Viper 791 XV on 04’ Elantra


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hurtado_roberto 
Copper - Posts: 196
Copper spacespace
Joined: July 30, 2004
Location: United States
Posted: April 30, 2005 at 8:00 PM / IP Logged  

I'm trying to install a Viper 791XV alarm on my 04 hyundai elantra and I was wondering if I need to add relays to the domelight and the parking light wires. 

I have the wire color information. It shows what the + and - parking light wires are and I'm not sure what to connect it to.  There is a + for the left and a + for the right parking lights.  There is only one negative thow.  The negative is on the ETACM modual which I've located and the positives are on the fuse box.

Where should I connect the light flash output and should I use a relay.  The yellow wire for the domelights comes out of the ETACM modual as well as the fuse box.  Do I need a relay if I connect it to the ETACM? This is my first alarm install by my self but I am MECP certified. It just goes to show how valuable that test is.  I passed the test with and 84.

Poly Dollies
hurtado_roberto 
Copper - Posts: 196
Copper spacespace
Joined: July 30, 2004
Location: United States
Posted: April 30, 2005 at 8:31 PM / IP Logged  
I did a search but it was a bit hard to find that info. I've stayed away from alarms but I do like connecting the rest of the equipment. I guess I will have to use a relay for the domelights but will I need one for the parking lights? I don't remember the guy that connected my brothers and sisters alarm ever adding a relay to the parking lights.
Poly Dollies
Autoobsession 
Copper - Posts: 119
Copper spacespace
Joined: April 29, 2004
Location: United States
Posted: April 30, 2005 at 9:12 PM / IP Logged  
Viper systems have both a - and + light output. You dont need a relay for it. From factory it comes + output and to change it all u need to do is switch a jumper on the systems brain.
hurtado_roberto 
Copper - Posts: 196
Copper spacespace
Joined: July 30, 2004
Location: United States
Posted: April 30, 2005 at 11:45 PM / IP Logged  
So I can choose if I want to connect the positive or the negative side of the parking lights. That doesn't sound right. Which one should I connect it to; the positive or the negative? I hope I can get it done this weekend.
Poly Dollies
hurtado_roberto 
Copper - Posts: 196
Copper spacespace
Joined: July 30, 2004
Location: United States
Posted: May 01, 2005 at 1:43 AM / IP Logged  

I have a manual transmission car so I'm not going to install the remote start portion of it right now.  That's more than half of the wires on the alarm I no longer need to worry about.  I think I'll just install the basic components since it's my first alarm

So far I have:  (-) door trigger input,  chassis ground,  siren output,  lock and unlock outputs, LED,  valet/program button,  Antenna/Receiver,  and the shock sensor

I'm not sure were to connect the constant power since I want to take advantage of my dual battery set-up (one is in the trunk).  Should I splice into the heavy guage wires connecting my two batteries or should I just connected to the ignition harness since you actually have to cut the wire from the front battery to separate the fuse panel from the rear battery.

Should I connect anything else.  I plan on just connecting the parking lights and the domelights tomorrow.  Hopefully it'll work since I have school on monday.

Poly Dollies
nava94 
Silver - Posts: 296
Silver spacespace
Joined: February 28, 2004
Location: United States
Posted: May 01, 2005 at 1:49 AM / IP Logged  
no bobk that was his 130th post and he wrote he is MECP certified not mecp certfed.okay bro you could connect it to either one. In the + position the onboard relay on the alarm is enabled and the alarm will output +12v on the white wire.  If the light flash polarity jumper inside the alarm you set it to - then the on board relay is disabled and the white wire will supply a - 200ma output suitable for driving factory parking light relays.go for positive grab your digital meter and test the wire you think is the positive parking light wire. when you turn the parking light on the meter should read 12volts and when you turn the parking lights off it should drop to zero. make sure you lower the dimmer switch when the lights are on and check to see the 12volts on your meter does not drop 2volts or more cause that is not the wire you want, the voltage should not change that much when you play with the dimmer switch.good luck. 
hurtado_roberto 
Copper - Posts: 196
Copper spacespace
Joined: July 30, 2004
Location: United States
Posted: May 01, 2005 at 2:23 AM / IP Logged  
Do I have to connect both the left and right (+) parking lights or just one because it sais there is a different wire for each side.  Is it easier to connect the hazard lights.
Poly Dollies
Velocity Motors 
Moderator - Posts: 12,488
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Fabrication. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: March 08, 2002
Location: Manitoba, Canada
Posted: May 01, 2005 at 10:47 AM / IP Logged  
Just use the (-) parking light wire ( BLUE ) at the switch or at the ETACM in the 16 pin plug at the wire is located at pin 14. The ETACM (Electronic Time and Alarm Control Module) is in the center console, behind the A/C controls. Change the jumper on the CPU to (-) output and your set. If you use the (+) setting you will need to grab two wires one for the left and one for the right of the car ( much like the european vehciles with isolated parking light wires.
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
hurtado_roberto 
Copper - Posts: 196
Copper spacespace
Joined: July 30, 2004
Location: United States
Posted: May 01, 2005 at 11:06 AM / IP Logged  

I'll give that a try today.  I was wondering if there is a selenoid at the positive side of the lights.  If there is one then it should be closed for current to pass through the lights and then to ground right.  If I connect the negative side of the lights will there be a complete circuit or will I just be opening a ground while the selenoid on the positive side is open.

I have no clue how the lights work.  Can someone explain or direct me to another forum topic.

Poly Dollies
Velocity Motors 
Moderator - Posts: 12,488
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Fabrication. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: March 08, 2002
Location: Manitoba, Canada
Posted: May 01, 2005 at 11:26 AM / IP Logged  

The way lights work is that on the light switch there is a (-) trigger wire that sends a ground signal to a relay that activates the parking lights. When you tap into this (-) trigger wire with the Viper system's (-) parking light trigger, the lights will activate.

On the flip side, the (+) activation goes on the other side of the relay and requires a (+) to activate the parking lights, but the system is isolated to left & right so you need two relays for each side to activate the parking lights.

Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
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